Document:

Exhibit 10.10

 Exhibit 10.10 
 EQUITY INTEREST PLEDGE AGREEMENT 
 This Equity Interest Pledge Agreement (the
“Agreement”) is entered into by and between the following Parties effective as of November 28, 2008. 
  

	 Pledgee: 
	Tri-Tech (Beijing) Co., Ltd., a wholly foreign-owned enterprise duly established and valid existing under the laws of the Peoples Republic of China (the “PRC”).

  

	 	Registered Address: Room 1102 Beiguang Plaza, No. 23 Huangsi Avenue, 
Xicheng District, Beijing, PRC. 
Business Address: Room 5D, Section A, Building 2 of Jinyuanshidai Business 
Center, No. 2 East Landianchang Road, Haidian District, Beijing, PRC. 

  

	 Pledgor:(1) 
	ZHANG Shu, a citizen of the PRC 
ID No. 230603197109030024 
Address: Room 502, Unit 1, No. 2-17,
Xinghua Avenue, Longfeng District, 
Daqing City, Heilongjiang Province, PRC. 

  

	 	(2) DONG Pengyu, a citizen of the PRC. 
ID No. 320103196805232017 
Address: Room 201, Unit 1,
No. 20, West Xuanwu Avenue, Xuanwu District, 
Beijing, PRC. 

  

	 	(3) WANG Yanmin, a citizen of the PRC. 
ID No. 110105195401292127 
Address: Room 9, Unit 1, Building 18,
Block 12, Heping Street, Chaoyang District, 
Beijing, PRC. 

  

	 	(4) SU Guiying, a citizen of the PRC. 
ID No. 110108195012175487
 Address: Room 602, Building 12, No. 20, Chegongzhuangxi Road, Haidian

District, Beijing, PRC. 

  

	 	(5) MA Jifeng, a citizen of the PRC. 
ID No. 110102195205242334 
Address: Room 601, Unit 6, Building 1,
No. 2, Sanlihe Zone 1, Xicheng 
District, Beijing, PRC. 

  

	 	(6) XU Peiliang, a citizen of the PRC. 
ID No. 110108193602171815 
Address: Room 210, Dormitory 311,
Yanbeiyuan, Beijing Unversity, Haidian District, Beijing, PRC. 

	 	(7) MIAO Haitao, a citizen of the PRC. 
ID No. 110108196109116031 
Address: Room 603, Unit 1,
Building 10, Puhuibeili, Haidian District, Beijing, 
PRC. 

  

	 	(8) WANG Ziqiang, a citizen of the PRC. 
ID No. 110106196807243350 
Address: No. 59, Donghuamen
Avenue, Dongcheng District, Beijing, PRC. 

  

	 	(9) GUO Song, a citizen of the PRC. 
ID No. 110224197009160510 
Address: Room 302, Unit 1, Building 4,
Nanding Village, Fengtai District, 
Beijing, PRC. 

  

	 	(10) WANG Yi, a citizen of the PRC. 
ID No. 11010619701128301X 
Address: Room 27, Building 12,
Hanzhuangzierli, Fengtai District, Beijing, 
PRC. 

  

	 	(11) ZHUANG Yongzhen, a citizen of the PRC. 
ID No. 110104195301022510
 Address: Room 307, Building 6, Jiang’anxi Road, Chaoyang District,
Beijing, 
PRC. 

  

	 	(12) WANG Yiguo, a citizen of the PRC. 
ID No. 36040219720421291X 
Address: Room 303, Unit 15, Building
7, Jiamingtongcheng Zone 1, No. 86, 
Beiyuan Road, Chaoyang District, Beijing, PRC. 

  

	 	(13) HU Guizhou, a citizen of the PRC. 
ID No. 340803196507092679 
Address: Room.43, Building 11, Shihua
Village 2, Daguan District, Anqing 
City, Anhui Province, PRC. 

  

	 	(14) WANG Jianqiu, a citizen of the PRC. 
ID No. 110105196409200818 
Address: Room 701, Flat
No. 15, Yongding Road, Haidian District, Beijing, 
PRC. 

  

	 	(15) HUANG Qian, a citizen of the PRC. 
ID No. 110101196710092021 
Address: Room 102, Unit 3,
Building 17, Block 3, Anzhenli, Chaoyang 
District, Beijing, PRC. 

  

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	 	(16) JIA Hui, a citizen of the PRC. 

 ID No. 51112519640703401X 

Address: Room 2605, Building 16, No. 172, Beiyuan Road, Chaoyang 
 District, Beijing, PRC. 
  

	 	(17) DENG Dunxia, a citizen of the PRC. 

 ID No. 370503195903270013

 Address: Room 806, Building 22, No. 77, Beisanhuanzhong Road, Haidian 
 District, Beijing, PRC. 
  

	 	(18) LIU Niya, a citizen of the PRC. 

 ID No. 37070219701216136X

 Address: Room 1008, Suite C, Jiarunhuayuan, Chaoyang District, Beijing, 
 PRC. 
 (the eighteen persons aforementioned
are collectively referred to as “Pledgor”) 
 WHEREAS, Pledgee is a wholly foreign-owned enterprise duly established
and valid existing in Beijing under the laws of the PRC. With the approval of relevant PRC authorities, it is permitted to engage in the development and manufacture of computer hardware, fittings, outer equipment, intelligent measurement and control
system equipment and fittings, the design of network systems, system integration, the service of network and communication technology, technical consulting and service for the products manufactured by it, and sales of such products. Pledgee and
Beijing Yanyu Water Tech Co., Ltd., (the “Company”) entered into an Exclusive Technical and Consulting Service Agreement effective as of November 28, 2008 (the “Service Agreement”). 
 WHEREAS, Pledgor collectively holds a 92.86% equity interest in the Company. 
 WHEREAS, in order to ensure that Pledgee collects the Consulting Service Fee (as such term is defined in the Service Agreement) from the Company,
Pledgor is willing to pledge all of its equity interest in the Company as security. 
 NOW THEREFORE, intending to be bound hereby and
for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties hereto agree as follows: 
  

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 ARTICLE I 
 DEFINITIONS 
 Unless it is otherwise stipulated, for the purpose of this Agreement, the following
terms shall have the following meanings: 
  

	1.1	Pledge shall have the full meaning assigned to that term in Article II of this Agreement. 

  

	1.2	Equity Interest shall mean the 92.86% equity interest in the Company collectively held by Pledgee and all equity interests of the Company held by any other Pledgee from time
to time. 

  

	1.3	Rate of Pledge shall mean the ratio between the value of the Pledge under this Agreement to the Consulting Service Fee under the Service Agreement. 

 

	1.4	Term of Pledge shall mean the period provided for under Article 3.2 hereunder. 

  

	1.5	Service Agreement shall mean the Exclusive Technical and Consulting Service Agreement entered into by and between the Company and Pledgee effective as of November 28,
2008. 

  

	1.6	Event of Default shall mean any event in accordance with Article 7 hereunder. 

  

	1.7	Notice of Default shall mean the notice of default issued by Pledgee in accordance with this Agreement. 

 ARTICLE II 
 PLEDGE 
  

	2.1	Pledgor pledges the Equity Interest in the Company as security for the payment of the Consulting Service Fee payable to Pledgee under the Service Agreement (the
“Pledge”). 

  

	2.2	Pledgee, by virtue of the Pledge, shall be entitled to have priority in receiving any payment or proceeds from the auction or sale of the Equity Interest pledged by Pledgor to
Pledgee. 

 ARTICLE III 
 RATE OF PLEDGE AND TERM OF PLEDGE 
  

	3.1	The Rate of Pledge: 

 The Rate of Pledge shall be 100%
under this Agreement. 
  

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	3.2	The Term of Pledge: 

  

	 	3.2.1	The Pledge shall take effect as of the date that the Pledge is recorded in the register of shareholders of the Company and shall remain effective so long as this Agreement remains
in effect. 

  

	 	3.2.2	During the term of Pledge, Pledgee shall be entitled to foreclose on the Pledge in accordance with this Agreement in the event that the Company fails to pay the Consulting Service
Fee in accordance with the Service Agreement. 

 ARTICLE IV 
 PHYSICAL POSSESSION OF PLEDGE DOCUMENTS 
  

	4.1	During the term of the Pledge, Pledgee shall be entitled to possess the contribution certificate of the Equity Interest (the “Contribution Certificate”) and the
register of shareholders of the Company. Pledgor shall deliver the Contribution Certificate and the register of shareholders hereunder to Pledgee within one week after the date of this Agreement. 

  

	4.2	Pledgee shall be entitled to collect any dividends from the Equity Interest during the term of the Pledge. 

 ARTICLE V 
 REPRESENTATIONS AND WARRANTIES OF PLEDGOR 
  

	5.1	Pledgor is the legal owner of the Equity Interest. 

  

	5.2	At any time Pledgee exercises its right under this Agreement, it shall be free from any interference. 

  

	5.3	Pledgee has the right to exercise or transfer the Pledge in accordance with this Agreement. 

  

	5.4	Pledgor shall not pledge or encumber the Equity Interest to any other person except for Pledgee. 

 ARTICLE VI 
 COVENANTS OF PLEDGOR 
  

	6.1	During the term of this Agreement, Pledgor covenants to Pledgee as follows: 

  

	 	6.1.1	 Except for the transfer of the Equity Interest by Pledgor, Pledgee and the Company as contemplated by the Exclusive Equity Interest Purchase Agreement entered into
by and among Pledgor, Pledgee and the Company, Pledgor shall 

  

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not transfer or assign the Equity Interest or create or permit to be created any pledge which may have an adverse affect on the rights or benefits of Pledgee
without prior written consent from Pledgee. 

  

	 	6.1.2	Pledgor shall comply with all laws and regulations with respect to the right of Pledge, present Pledgee any notices, orders or suggestions relating to the Pledge issued or made by a
relevant authority after receiving such notices, orders or suggestions and comply with such notices, orders or suggestions or object to the foregoing matters at the reasonable request of Pledgee or with the written consent of Pledgee.

  

	 	6.1.3	Pledgor shall timely notify Pledgee of any events or the receipt of any notice which may affect the Equity Interest or any part of its right, which may change any of Pledgor’s
covenants and obligations under this Agreement or which may affect Pledgor’s performance of its obligations under this Agreement. 

  

	6.2	Pledgor agrees that Pledgee’s right to exercise the Pledge shall not be suspended or hampered through any legal procedure instituted by Pledgor, any successors of Pledgor or
any person authorized by Pledgor. 

  

	6.3	Pledgor warrants to execute in good faith and cause other parties who may have any interest in the Pledge to execute all title certificates, contracts or other documents, and/or
perform and cause other parties who have interests to take action as required by Pledgee and provide access to exercise the rights and authorization vested in Pledgee under this Agreement, and execute all the documents with respect to the Equity
Interest and promptly provide all the notices, orders and decisions related to the Equity Interest and deemed necessary by Pledgee to Pledgee within a reasonable time. 

  

	6.4	Pledgor warrants that it will comply with and perform all the guarantees, covenants, agreements, representations and conditions hereunder for the benefit of Pledgee. Pledgor shall
compensate Pledgee for all losses suffered in the event that Pledgor does not fully perform its guarantees, covenants, agreements, representations or conditions hereunder and causes any damage to Pledgee. 

 ARTICLE VII 
 EVENTS OF DEFAULT 

  

	7.1	The occurrence of any of the events listed below shall be deemed as an Event of Default: 

  

	 	7.1.1	Failure by the Company to make full payment of the Consulting Service Fee, as provided under the Service Agreement. 

  

	 	7.1.2	Pledgor makes any material misleading or fraudulent representations or warranties under Article 5 herein. 

  

	 	7.1.3	Pledgor violates any of the covenants under Article 6 herein. 

  

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	 	7.1.4	Pledgor violates any of the terms or conditions hereof. 

  

	 	7.1.5	Pledgor waives the pledged Equity Interest or transfers or assigns the pledged Equity Interest without the prior written consent of Pledgee, except as provided in Article 6.1.1 in
this Agreement. 

  

	 	7.1.6	Any loan, security, compensation, covenant or other compensation liability of Pledgor (i) is required to be paid or performed in advance because of an event of default
thereunder; or (ii) is due but cannot be paid or performed, which makes Pledgee reasonably believe Pledgor’s capability of performing under this Agreement has been affected. 

  

	 	7.1.7	Pledgor is incapable of paying its general debt or other debt. 

  

	 	7.1.8	The promulgation of relevant laws makes the performance of this Agreement illegal or makes Pledgor unable to perform its obligations under this Agreement. 

 

	 	7.1.9	The withdrawal, suspension, invalidation or material revision of any approval, permit or authorization from the relevant authorities needed to perform or validate this Agreement.

  

	 	7.1.10	Any adverse change in the property of Pledgor that causes Pledgee to reasonably believe that Pledgor may be unable to perform its obligations hereunder. 

  

	 	7.1.11	The inability or refusal by any successor or assignee of the Company to pay the amounts due under the Service Agreement. 

  

	 	7.1.12	The occurrence of any other circumstances whereby Pledgee becomes incapable of exercising its right to foreclose on the Pledge. 

  

	7.2	Pledgor must immediately notify Pledgee in writing if Pledgor knows or is aware of any event stipulated in Article 7.1 or events that may reasonably lead to any event stipulated in
Article 7.1. 

  

	7.3	Unless the event of default stipulated in Article 7.1 has been remedied to Pledgee’s sole and absolute satisfaction, Pledgee may (i) give a written notice of default to
Pledgor and require Pledgor to immediately make full payment of the outstanding Consulting Service Fee under the Service Agreement and other payables or (ii) foreclose on the Pledge in accordance with Article 8 herein. 

 

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 ARTICLE VIII 
 EXERCISE OF THE RIGHT OF THE PLEDGE 
  

	8.1	Prior to full payment of the Consulting Service Fee under the Service Agreement, Pledgor shall not transfer or assign the Equity Interest without prior written approval from
Pledgee. 

  

	8.2	Pledgee shall give Notice of Default to Pledgor when Pledgee exercises its right to foreclose on the Pledge. 

  

	8.3	Subject to Article 7.3 herein, Pledgee may exercise the right to foreclose on the Pledge at any time following written Notice of Default. 

  

	8.4	Pledgee is entitled to priority receipt of any payment or proceeds from the auction or sale of all or part of the Equity Interest pledged herein in accordance with applicable law
until the outstanding Consulting Service Fee and all other payables under the Service Agreement are fully repaid. 

  

	8.5	Pledgor shall not hinder Pledgee from foreclosing on the Pledge in accordance with this Agreement and shall give necessary assistance so that Pledgee may effectively realize the
value of the Pledge. 

 ARTICLE IX 
 TRANSFER OR ASSIGNMENT 
  

	9.1	Pledgor shall not grant or transfer its rights or obligations hereunder without prior written consent from Pledgee. 

  

	9.2	This Agreement shall be binding upon and inure to the benefit of Pledgor and the successors of Pledgor. 

  

	9.3	Pledgee may transfer or assign all or any rights and obligations under the Service Agreement to any person (natural person or legal entity) at any time. Any assignee shall enjoy and
undertake the same rights and obligations herein of Pledgee as if the assignee is a party hereto. To the extent Pledgee transfers or assigns its rights and obligations under the Service Agreement, at the request of Pledgee, Pledgor shall execute the
relevant agreements and/or documents with respect to such transfer or assignment. 

  

	9.4	Upon Pledgee’s transfer or assignment, the new parties to the Pledge shall re-execute a Pledge contract. 

  

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 ARTICLE X 
 TERMINATION 
  

	10.1	This Agreement shall expire on the date that is twenty-five (25) years following the date hereof, and this Agreement may be extended prior to termination upon written agreement
executed by each Party. 

 ARTICLE XI 
 FORMALITIES FEES AND OTHER EXPENSES 
  

	11.1	Pledgor shall be responsible for all fees and actual expenditures in relation to this Agreement, including, but not limited to, legal fees, costs of production, stamp tax and any
other taxes and charges. If Pledgee pays the relevant taxes in accordance with the laws, Pledgor shall fully reimburse Pledgee for any such taxes it pays. 

  

	11.2	Pledgor shall be responsible for all fees, including, but not limited to, any taxes, formalities fees, management fees, litigation fees, attorney’s fees, and various insurance
premiums in connection with disposition of the Pledge, incurred by Pledgor as a result of the failure of Pledgor to pay any payable taxes, fees or charges in accordance with this Agreement, or as a result of the fact that Pledgee has recourse to any
foregoing taxes, charges or fees by any means or for any other reasons. 

 ARTICLE XII 
 FORCE MAJEURE 
  

	12.1	If the fulfilment of this Agreement is delayed or blocked due to a Force Majeure Event (as defined below), the Party affected by such a Force Majeure Event shall be free from any
obligation to the extent of such delay or holdback. As used herein, the term “Force Majeure Event” shall mean any event which is out of the control of either Party, and which is unavoidable or insurmountable even if the Party
affected by such event paid reasonable attention to it. A Force Majeure Event shall include, but not be limited to, government actions, natural disaster, fire, explosion, typhoons, floods, earthquakes, tide, lightning or war. However, any lack of
credit, assets or financing shall not be deemed as a Force Majeure Event. The Party claiming the occurrence of a Force Majeure Event shall inform the other Party and provide the other Party with the steps of fulfilling the obligations of this
Agreement. 

  

	12.2	 The Party affected by such a Force Majeure Event shall be free from any obligation under this Agreement to the extent it is delayed or impeded provided that the
Party affected by such a Force Majeure Event has made reasonable endeavors to perform the 

  

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Agreement. Upon termination of the Force Majeure Event, the Parties agree to use reasonable best efforts to complete the transactions contemplated by this
Agreement. 

 ARTICLE XIII 
 DISPUTE SETTLEMENT 
  

	13.1	This Agreement shall be governed by and construed in all respects in accordance with the laws of the PRC. 

  

	13.2	The Parties shall strive to settle any dispute arising from the interpretation or performance, or in connection with this Agreement through mutual agreement and negotiation. In case
no settlement can be reached through consultation, each Party may submit such matter to the China International Economic and Trade Arbitration Committee for arbitration. The arbitration shall be held in Beijing. The arbitration proceedings shall be
conducted in Chinese. The arbitration award shall be final and binding upon the Parties. The arbitration award may be submitted to any court with jurisdiction for enforcement. 

 ARTICLE XIV 
 NOTICES 
  

	14.1	Any notice which is given by the Parties for the purpose of performing the rights and obligations hereunder shall be in writing. Where such notice is delivered personally, the time
of notice shall be the time when such notice actually reaches the addressee. Where such notice is transmitted by telex or facsimile, the notice time shall be the time when such notice is transmitted. If such notice does not reach the addressee on a
business date or reaches the addressee after the business time, the date of notice shall be the next business day. The delivery place shall be the address first written above for each Party hereto or any other address provided to the other Parties
in writing from time to time. Written method includes fax and telefax. 

 ARTICLE XV 
 APPENDIX 
  

	15.1	The Appendix of this Agreement as attached hereto is part of this Agreement. 

  

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 ARTICLE XVI 
 EFFECTIVENESS 
  

	16.1	This Agreement and any amendments, supplements and modifications shall be in writing and come into effect upon execution by the Parties hereto. 

  

	16.2	This Agreement is executed both in Chinese and English in one or more original or facsimile counterparts. The Chinese version will prevail in the event of any inconsistency between
the English and any Chinese translations thereof. 

 [Remainder of Page Left Intentionally Blank – Signature Page
Follows] 
  

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 [Equity Interest Pledge Agreement – Signature Page – BYY] 
 IN WITNESS WHEREOF, the Parties have executed this Agreement on the date first above written. 
  

			
	Pledgee:
	
	 Tri-Tech (Beijing) Co. Ltd. (seal)

		
	By:	 	/s/ HU Guizhou        
	Name:	 	HU Guizhou
	 Its:
	 	Authorized Representative

  

			
	Pledgor:
	
	 /s/ ZHANG Shu

	ZHANG Shu

  

	
	
	 /s/ DONG Pengyu

	DONG Pengyu

	
	
	 /s/ WANG Yanmin

	WANG Yanmin

	
	
	 /s/ SU Giuying

	SU Guiying

	
	
	 /s/ MA Jifeng

	MA Jifeng

	
	
	 /s/ XU Peiliang

	XU Peiliang

	
	
	 /s/ MIAO Haitao

	MIAO Haitao

  

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	 /s/ WANG Ziqiang

	WANG Ziqiang

	
	
	 /s/ GOU Song

	GOU Song

	
	
	 /s/ WANG Yi

	WANG Yi

	
	
	 /s/ ZHUANG Yongzhen

	ZHUANG Yongzhen

  

	
	
	 /s/ WANG Yiguo

	WANG Yiguo

	
	
	 /s/ HU Guizhou

	HU Guizhou

	
	
	 /s/ WANG Jianqiu

	WANG Jianqiu

	
	
	 /s/ HUANG Qian

	HUANG Qian

	
	
	 /s/ JIAN Hui

	JIAN Hui

	
	
	 /s/ DENG Dunxia

	DENG Dunxia

	
	
	 /s/ LIU Niya

	LIU Niya

  

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 APPENDIX 
  

	1.	The register of the shareholders of Beijing Yanyu Water Tech Co., Ltd. 

  

	2.	The Contribution Certificate of Beijing Yanyu Water Tech Co., Ltd. 

  

	3.	The Exclusive Technical and Consulting Service Agreement by and between Tri-Tech (Beijing) Co., Ltd. and Beijing Yanyu Water Tech Co., Ltd.Exhibit 10.11

 Exhibit 10.11 
 EXCLUSIVE EQUITY INTEREST PURCHASE AGREEMENT 
 This Exclusive Equity Interest Purchase Agreement (the
“Agreement”) is entered into by and among the following parties effective as of November 28, 2008. 
  

	 Party A: 
	Tri-Tech (Beijing) Co., Ltd., a wholly foreign-owned enterprise duly established and valid existing under the laws of the People’s Republic of China (“PRC”). Registered Address:
Room 1102 Beiguang Plaza, No. 23 Huangsi Avenue, Xicheng District, Beijing, PRC. 

 Business Address: Room 5D, Section A
Building 2 of Jinyuanshidai Business Center, No. 2 East Landianchang Road, Haidian District, Beijing, PRC. 
  

	 Party B: 
	(1) ZHANG Shu, a citizen of the PRC 

 ID No. 230603197109030024 

Address: Room 502, Unit 1, No. 2-17, Xinghua Avenue, Longfeng District, Daqing City, Heilongjiang Province, PRC. 
 (2) DONG Pengyu, a citizen of the PRC. 
 ID No. 320103196805232017 
 Address: Room 201, Unit 1, No. 20, West Xuanwu Avenue, Xuanwu District, Beijing, PRC.

 (3) WANG Yanmin, a citizen of the PRC. 
 ID No. 110105195401292127 
 Address: Room 9, Unit 1, Building 18, Block 12, Heping Street, Chaoyang
District, Beijing, PRC. 
 (4) SU Guiying, a citizen of the PRC. 
 ID No. 110108195012175487 
 Address: Room
602, Building 12, No. 20, Chegongzhuangxi Road, Haidian District, Beijing, PRC. 
 (5) MA Jifeng, a citizen of the PRC.

 ID No. 110102195205242334 
 Address: Room 601, Unit 6, Building 1, No. 2, Sanlihe Zone 1, Xicheng District, Beijing, PRC. 
 (6) XU Peiliang, a
citizen of the PRC. 
 ID No. 110108193602171815 
 Address: Room 210, Dormitory 311, Yanbeiyuan, Beijing University, Haidian District, Beijing, PRC. 

 (7) MIAO Haitao, a citizen of the PRC. 
 ID No. 110108196109116031 
 Address:
Room 603, Unit 1, Building 10, Puhuibeili, Haidian District, Beijing, PRC. 
 (8) WANG Ziqiang, a citizen of the PRC. 
 ID No. 110106196807243350 
 Address:
No. 59, Donghuamen Avenue, Dongcheng District, Beijing, PRC. 
 (9) GUO Song, a citizen of the PRC. 
 ID No. 110224197009160510 
 Address: Room
302, Unit 1, Building 4, Nanding Village, Fengtai District, Beijing, PRC. 
 (10) WANG Yi, a citizen of the PRC. 
 ID No. 11010619701128301X 
 Address: Room
27, Building 12, Hanzhuangzierli, Fengtai District, Beijing, PRC. 
 (11) ZHUANG Yongzhen, a citizen of the PRC. 
 ID No. 110104195301022510 
 Address: Room
307, Building 6, Jiang’anxi Road, Chaoyang District, Beijing, PRC. 
 (12) WANG Yiguo, a citizen of the PRC. 
 ID No. 36040219720421291X 
 Address: Room
303, Unit 15, Building 7, Jiamingtongcheng Zone 1, No. 86, Beiyuan Road, Chaoyang District, Beijing, PRC. 
 (13) HU Guizhou, a
citizen of the PRC. 
 ID No. 340803196507092679 
 Address: Room.43, Building 11, Shihua Village 2, Daguan District, Anqing City, Anhui Province, PRC. 
 (14) WANG Jianqiu, a citizen of the PRC. 
 ID No. 110105196409200818 
 Address: Room 701, Flat No. 15, Yongding Road, Haidian District, Beijing, PRC. 
 (15) HUANG Qian, a citizen of the PRC. 
 ID No. 110101196710092021 
 Address: Room 102, Unit 3, Building 17, Block 3, Anzhenli, Chaoyang District, Beijing, PRC.

  

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 (16) JIA Hui, a citizen of the PRC. 
 ID No. 51112519640703401X 
 Address: Room
2605, Building 16, No. 172, Beiyuan Road, Chaoyang District, Beijing, PRC. 
 (17) DENG Dunxia, a citizen of the PRC.

 ID No. 370503195903270013 
 Address: Room 806, Building 22, No. 77, Beisanhuanzhong Road, Haidian District, Beijing, PRC. 
 (18) LIU Niya, a
citizen of the PRC. 
 ID No. 37070219701216136X 
 Address: Room 1008, Suite C, Jiarunhuayuan, Chaoyang District, Beijing, PRC. 
 (The eighteen persons
aforementioned are collectively referred to as “Party B”) 
  

	 Party C: 
	Beijing Yanyu Water Tech Co., Ltd., a limited liability company duly established and valid existing under the laws of the PRC. 

 Registered Address: Room 518, 5th Floor, South Building, No. A3 Cuiwei Road, Wanshou Road Street, Haidian District, Beijing, PRC. 
 WHEREAS, Party B holds a 92.86% equity interest in Party C (the “Equity Interest”); 
 WHEREAS, Party C and Party A have entered into an Exclusive Technical Consulting and Service Agreement and other agreements. 
 NOW THEREFORE, intending to be bound hereby and for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties hereto agree as follows: 
 ARTICLE I 
 TRANSFER OF EQUITY
INTEREST 
  

	1.1	Grant of Purchase Right 

 Party B hereby irrevocably
grants Party A the exclusive right to purchase or designate one or more persons (the “Specified Person”) to purchase all or any portion of the Equity Interest from Party B, subject to compliance with legal restrictions under
applicable PRC laws (the “Purchase Right”). Party B shall not sell or transfer all or any portion of the 

  

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Equity Interest to any party other than Party A and/or the Specified Person. Party C hereby acknowledges that Party B may grant the Purchase Right to Party
A, and the other shareholders of Party C have already agreed to waive any rights to acquire the Equity Interest of Party C from Party B and such shareholders have executed the Announcement Letter to waive their pre-emptive rights (attached as
Appendices). As used in this Agreement, the term “person” refers to an individual, corporation, joint enterprise, partnership, enterprise, trust or non-corporation organization. 
  

	1.2	Steps for Exercise of the Purchase Right 

 Compliance with
PRC laws and regulations are conditions precedent to exercise of the Purchase Right by Party A. To the extent Party A wishes to exercise the Purchase Right, it shall issue a written notice (the “Purchase Notice”) to Party B, and the
Purchase Notice shall state: (a) that Party A intends to exercise the Purchase Right; (b) the percentage of the Equity Interest to be purchased therewith; and (c) the effective date or transfer date. 
  

	1.3	Consideration for the Equity Interest 

 The transfer fee
(“Transfer Fee”) payable by Party A shall be equal to the value of the net assets of Party C on January 1, 2008, as determined by the assets evaluation institution retained by Party A. 
  

	1.4	Transfer of the Equity Interest 

 Each time Party A
exercises the Purchase Right: 
  

	 	1.4.1	Party B shall ensure that Party C timely convenes a shareholders’ meeting at which the shareholders of Party C shall pass resolutions providing that Party B may transfer the
Equity Interest to Party A or the Specified Person. 

  

	 	1.4.2	Each of Party B and Party C shall enter into an equity transfer contract relating to the Equity Interest pursuant to this Agreement and the Purchase Notice (an “Equity
Transfer Contract”). 

  

	 	1.4.3	 The Parties shall execute all other necessary agreements or documents, obtain all necessary government approvals and consents, and take all necessary actions to
legally transfer the ownership of the Equity Interest to Party A or the Specified Person and ensure that Party A or the Specified Person will be the registered owner of the Equity Interest. The Equity Interest shall be free from any Security
Interest (as defined below). For the purpose of this Agreement, the term “Security Interest” shall include any guarantee, mortgage, third party right or interest, purchase right, preemption right, offset right, ownership withholding
right or other security arrangement, but shall exclude any security interest granted pursuant to this Agreement or the Equity Interest Pledge Agreement entered into by and between Party A and Party B effective as of November 28, 2008
(“Equity Interest Pledge Agreement”). Pursuant to the Equity Interest Pledge 

  

 4 

	 	 
Agreement, Party B shall pledge all the equity possessed by Party B in Party C to Party A as guaranty of the fees payable pursuant to the Exclusive Technical
and Consulting Service Agreement entered into by and between Party C and Party A effective as of November 28, 2008 (the “Exclusive Technical and Consulting Service Agreement”). 

  

	1.5	Payment for the Equity Interest 

  

	 	1.5.1	Party A shall pay the Transfer Fee to Party B in accordance with the terms of Article 1.3. 

 ARTICLE II 
 COVENANTS RELATING TO THE EQUITY INTEREST 
  

	2.1	Covenants of Party C 

  

	 	2.1.1	Without the written consent of Party A, Party C will not supplement, amend or modify any provisions of the constitutional documents of Party C and will not otherwise increase or
reduce its registered capital or change its equity structure in any way. 

  

	 	2.1.2	Party C shall remain in good standing, and prudently and efficiently operate its business and corporate affairs in accordance with commercial standards and practice.

  

	 	2.1.3	Without the prior written consent of Party A, Party C shall not sell, transfer, mortgage or dispose of any of its assets, business or beneficial rights, or allow the creation of any
Security Interest or other encumbrance upon its assets. 

  

	 	2.1.4	Without the prior written consent of Party A, Party C shall not incur or guaranty any debt, or permit the existence of any debt, other than (i) debt that is incurred during the
course of normal business operations (excluding business loans) and (ii) debt that has been previously disclosed to Party A and to which Party A has provided prior written consent. 

  

	 	2.1.5	Party C shall operate in the normal course of business to maintain the value of its assets and shall not take any action which shall materially adversely influence its business
operations or the value of its assets. 

  

	 	2.1.6	Without the prior written consent of Party A, Party C shall not enter into any material agreement outside the normal course of business. For the purpose of this Agreement, an
agreement involving an amount in excess of RMB100,000 shall be deemed a material agreement. 

  

 5 

	 	2.1.7	Without the prior written consent of Party A, Party C shall not provide any loans or credit to any third party. 

  

	 	2.1.8	At the request of Party A, Party C shall provide Party A with any and all materials relating to the business operation and financial status of Party C. 

  

	 	2.1.9	Party C shall purchase business insurance from an insurance company acceptable to Party A and shall maintain such insurance. The amount and kind of such insurance shall be similar
to insurance carried by other companies which operate similar businesses and possess similar assets in the same geographic area. 

  

	 	2.1.10	Without the prior written consent of Party A, Party C shall not merge with, make an investment in, combine with or purchase the equity or substantially all the assets of any other
entity. 

  

	 	2.1.11	Party C shall inform Party A of any actual or threatened litigation, arbitration, or administrative procedures relating to the assets, business and beneficial rights of Party C.

  

	 	2.1.12	In order to maintain Party C’s ownership of all its assets, Party C shall execute all necessary or proper documents, take all necessary or proper actions, substitute all
necessary or proper claims, and make all necessary or proper answer to all compensation claims. 

  

	 	2.1.13	Without the prior written consent of Party A, Party C shall not grant any dividend to its shareholders. However, once requested by Party A, Party C shall immediately distribute all
distributable profits to its shareholders. 

  

	2.2	Covenants of Party B 

  

	 	2.2.1	Without the prior written consent of Party A, Party B shall not sell, transfer, mortgage or dispose of any right or interest relating to the Equity Interest, or allow any creation
of any other Security Interest or encumbrance on the Equity Interest (excluding the security interest under this Agreement and the Equity Interest Pledge Agreement). 

  

	 	2.2.2	Party B shall use its best efforts to prevent the other shareholders of Party C, if any, from adopting resolutions relating to the sale, transfer, mortgage, disposal of any rights
or interests relating to the Equity Interest, or allowing any creation of any other Security Interest or encumbrance on the Equity Interest without the prior written consent of Party A (excluding the security interest under this Agreement and the
Equity Interest Pledge Agreement). 

  

	 	2.2.3	 Party B shall use its reasonable best efforts to prevent the other shareholders of Party C, if any, from approving resolutions relating to Party C’s merger
with, 

  

 6 

	 	 
combination with, purchase of, or investment in any other entity without the prior written consent of Party A. 

  

	 	2.2.4	Party B shall inform Party A immediately of any actual or threatened litigation, arbitration, or administrative procedure relating to the Equity Interest. 

 

	 	2.2.5	Party B shall use its reasonable best efforts to ensure that the other shareholders of Party C, if any, approve the transfer of the Equity Interest as set out in this Agreement.

  

	 	2.2.6	In order to keep the ownership of the Equity Interest, Party B shall execute all necessary or proper documents, take all necessary or proper actions, substitute all necessary or
proper claims, and make all necessary or proper responses to all compensation claims. 

  

	 	2.2.7	Upon the request of Party A from time to time, Party B shall immediately transfer the Equity Interest to Party A or the Specified Person pursuant to the terms of this Agreement.

  

	 	2.2.8	Party B shall strictly comply with this Agreement and any other agreements which may be entered into by and among Party B, Party C, and Party A collectively or separately, and shall
perform its obligations under this Agreement, and shall not take any actions which shall affect the validity and enforceability of this Agreement. 

 ARTICLE III 
 REPRESENTATIONS AND WARRANTIES 
  

	3.1	Party B and Party C, jointly and severally, make the following representations to Party A on the date of this Agreement and the date of each Equity Transfer Contract:

  

	 	3.1.1	Each such party has the power to enter into and deliver this Agreement and the Equity Transfer Contract to be executed by it for each transfer of the Equity Interest, and each such
Party has the power and capacity to perform its obligations under this Agreement and the Equity Transfer Contract. Upon the execution of this Agreement and the Equity Transfer Contract, such documents shall constitute valid and legally binding
documents and may be enforceable in accordance therewith. 

  

	 	3.1.2	Neither the execution and delivery of this Agreement or any Equity Transfer Contract, nor performance of the obligations under this Agreement or any Equity Transfer Contract will:
(i) violate any applicable PRC law; (ii) conflict with such Party’s Articles of Association or other organizational documents; (iii) breach any contract or document which such Party is a party to or which is binding upon such
Party; (iv) violate any acquired permit, approval or any valid qualification; or (v) result in the termination or revocation or additional conditions to the acquired permit approval or qualification. 

  

 7 

	 	3.1.3	Party C maintains full and transferable ownership of all of its assets. Except for the pledge incurred by this Agreement and the pledge of the Equity Interest incurred by the Equity
Interests Pledge Agreement, there is no other pledge and/or mortgage on the Equity Interest. 

  

	 	3.1.4	Party C has no outstanding debt except for (i) debts, which were incurred during the ordinary course of business; and (ii) debt that has been previously disclosed to Party
A and to which Party A has provided written consent. 

  

	 	3.1.5	Party C is in compliance with all applicable laws and regulations. There is no actual, pending or potential litigation, arbitration, or administrative procedures relating to the
Equity Interest, the assets of Party C or other matters relating to Party C. 

 ARTICLE IV 
 EFFECTIVE DATE 
  

	4.1	This Agreement shall be executed and come into effect as of the date first set forth above. This Agreement shall expire on the date that is twenty-five (25) years following the
date hereof, and this Agreement may be extended prior to termination upon written agreement executed by each Party. 

 ARTICLE V 
 GOVERNING LAW AND DISPUTE SETTLEMENT 
  

	5.1	Governing Law 

 This Agreement shall be governed by and
interpreted according to the laws of the PRC. 
  

	5.2	Dispute Settlement 

 The Parties shall negotiate in good
faith to settle any dispute relating to the interpretation or implementation of this Agreement. To the extent such dispute cannot be settled within thirty (30) days from the date a Party first issues written notice requesting settlement of a
dispute through negotiation, either Party may submit the dispute to the China International Economic and Trade Arbitration Committee for arbitration according to the requisite arbitration rules. The arbitration shall be held in Beijing. The
arbitration proceedings shall be conducted in Chinese. The arbitration award is final and binding on each party. 
  

 8 

 ARTICLE VI 
 TAX AND EXPENSES 
  

	6.1	Each Party shall bear any and all burden of its own taxes, costs and expenses under PRC law relating to the preparation and execution of this Agreement and each Equity Transfer
Contract. 

 ARTICLE VII 
 NOTICE 
  

	7.1	Any notice or other communication under this Agreement shall be in Chinese and be sent to the recipient at its address first above written or such other address as may be designated
from time to time by hand delivery, mail or facsimile. Any notice required or given hereunder shall be deemed to have been served: (a) on the same date if sent by hand delivery; (b) on the tenth day if sent by prepaid air-mail, or on the
fourth day if sent by the professional hand delivery which is acknowledged worldwide; and (c) the receipt date displayed on the transmission confirmation notice if sent by facsimile. 

 ARTICLE VIII 
 CONFIDENTIALITY 

  

	8.1	The Parties acknowledge and confirm that any oral or written information relating to this Agreement communicated among the Parties shall be deemed to be confidential information
(“Confidential Information”). The Parties shall keep such Confidential Information confidential and shall not disclose it to any third party without written consent from of the other Parties except that the following information
shall be excluded from the definition of Confidential Information: (a) information that is publicly available or will become publicly available so long as it is not disclosed by the Party receiving such Confidential Information;
(b) information that is disclosed in accordance with applicable laws or regulations; or (c) a Party may disclose Confidential Information to its attorney or financial advisor so long as such attorney or legal advisor needs to access such
information and agrees to keep such information confidential. The disclosure by an employee or agent of a Party shall be deemed to be disclosure by the Party itself, and the Party shall undertake liability therefor. The Parties agree that the
provisions of this Article shall survive notwithstanding the termination of this Agreement. 

  

 9 

 ARTICLE IX 
 FURTHER ASSURANCE 
  

	9.1	The Parties agree that they will execute any and all necessary documents required for the purpose of performing this Agreement and will execute any documents and take any actions
which are beneficial for purposes of this Agreement. 

 ARTICLE X 
 MISCELLANEOUS 
  

	10.1	Amendment and supplementation 

 Any revision to, amendment
of or supplement to this Agreement must be in writing and be executed by each Party hereto. 
  

	10.2	Compliance with laws and regulations 

 The Parties shall
comply with all applicable laws and regulations which have been formally issued. 
  

	10.3	Entire agreement 

 Unless it is otherwise revised, amended
or supplemented, this Agreement and its appendices constitute the entire agreement among the Parties as to the subject matter of this Agreement, and supersede any prior oral or written negotiations, statements or agreements among the parties
relating thereto. 
  

	10.4	Headings 

 Headings in this Agreement are only used for
reading convenience, and shall not be used to interpret, explain or otherwise influence the meaning of the provisions of this Agreement. 
  

	10.5	Language 

 This Agreement is made in Chinese and English
in one or more original or facsimile counterparts. The Chinese version will prevail in the event of any inconsistency between the English and any Chinese translations thereof. 
  

	10.6	Severability 

 If any of the terms of this Agreement is
declared invalid, illegal or unenforceable in accordance with any applicable laws or regulations, the validity and enforceability of the other terms hereof shall nevertheless remain unaffected. The Parties hereto agree to negotiate to restructure
such invalid, illegal or unenforceable terms so as to maintain the same or similar economic impact. 
  

 10 

	10.7	Successor 

 This Agreement shall bind the permitted
transferee or successor of each Party and shall be interpreted for its benefit. 
  

	10.8	Survival 

  

	 	10.8.1	Any duties occurred in relation to the Agreement prior to termination or expiration shall continue to be effective after expiration or termination of the Agreement.

  

	 	10.8.2	The provisions of Articles 5, 7, 8 and 10.8 shall survive the termination of this Agreement. 

  

	10.9	Waiver 

 Each Party may waive the terms and conditions
under this Agreement in writing. Such waiver must be duly signed by such Party. Any waiver relating to the breach of the other Party in certain circumstance shall not be deemed as a waiver for a similar breach in other circumstances. 
 [Remainder of Page Left Intentionally Blank – Signature Page Follows] 
  

 11 

 [Equity Interest Purchase Agreement – BYY – Signature Page] 
 IN WITNESS WHEREOF, the Parties have executed this Agreement on the date first above written. 
  

			
	Party A: Tri-Tech (Beijing) Co., Ltd. (seal)
		
	By:	 	/s/ ZHAO Wanzong
	Name:	 	ZHAO Wanzong
	Its:	 	President

  

	
	Party B:
	
	/s/ ZHANG Shu
	ZHANG Shu

	
	
	/s/ DONG Pengyu
	DONG Pengyu
	
	/s/ WANG Yanmin
	WANG Yanmin
	
	/s/ SU Guiying
	SU Guiying
	
	/s/ MA Jifeng
	MA Jifeng
	
	/s/ XU Peiliang
	XU Peiliang
	
	/s/ MIAO Haitao
	MIAO Haitao
	
	/s/ WANG Ziqiang
	WANG Ziqiang

  

 12 

	
	
	/s/ GUO Song
	GUO Song
	
	/s/ WANG Yi
	WANG Yi
	
	/s/ ZHUANG Yongzhen
	ZHUANG Yongzhen
	
	/s/ WANG Yiguo
	WANG Yiguo
	
	/s/ HU Guizhou
	HU Guizhou
	
	/s/ WANG Jianqiu
	WANG Jianqiu
	
	/s/ HUANG Qian
	HUANG Qian
	
	/s/ JIA Hui
	JIA Hui
	
	/s/ DENG Dunxia
	DENG Dunxia
	
	/s/ LIU Niya
	LIU Niya

  

			
	Party C: Beijing Yanyu Water Tech Co. Ltd., (seal)
		
	By:	 	/s/ HU Guizhou
	Name:	 	HU Guizhou
	Its:	 	Authorized Representative

  

 13 

 Appendix 1 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 16.6% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 83.4% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ HU Guizhou
	HU Guizhou

 Appendix 2 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 5.36% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, HU Guizhou, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 96.64% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ WANG Yanming
	WANG Yanming

 Appendix 3 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 1.79% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, HU Guizhou, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 98.21% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ SU Guiying
	SU Guiying

 Appendix 4 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 5.36% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
HU Guizhou, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest of the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 94.64% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ MA Jifeng
	MA Jifeng

 Appendix 5 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 1.79% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, HU Guizhou, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 98.21% equity interest in the Company and will not encumber the transfer of the equity interest you
proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ XU Peiliang
	XU Peiliang

 Appendix 6 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 3.56% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, HU Guizhou, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 96.44% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ MIAO Haitao
	MIAO Haitao

 Appendix 7 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 1.79% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, HU Guizhou, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 98.21% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ WANG Ziqiang
	WANG Ziqiang

 Appendix 8 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 3.56% equity interest in the Company. I, together with the other shareholders, HU Guizhou, WANG
Yi, MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 96.44% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ GUO Song
	GUO Song

 Appendix 9 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 1.79% equity interest in the Company. I, together with the other shareholders, GUO Song, HU
Guizhou, MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United
New Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 98.21% equity interest in the Company and will not encumber the transfer of the equity
interest you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ WANG Yi
	WANG Yi

 Appendix 10 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 7.14% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, HU Guizhou, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New Technology
Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 92.86% equity interest in the Company and will not encumber the transfer of the equity interest you
proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ ZHUANG Yongzhen
	ZHUANG Yongzhen

 Appendix 11 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 1.79% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, HU Guizhou, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 98.21% equity interest of the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ WANG Yiguo
	WANG Yiguo

 Appendix 12 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 13.29% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG
Yi, MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, HU Guizhou, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest of the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 86.71% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ WANG Jianqiu
	WANG Jianqiu

 Appendix 13 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold an 11.06% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG
Yi, MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, Hu Guizhou, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 88.94% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ HUANG Qian
	HUANG Qian

 Appendix 14 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 6.35% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, HU Guizhou, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 93.65% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ DONG Pengyu
	DONG Pengyu

 Appendix 15 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 6.37% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, HU Guizhou, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 93.63% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ JIA Hui
	JIA Hui

 Appendix 16 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 3.54% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, HU Guizhou, MIAO Haitao, SU Guiying, LIU Niya, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 96.46% of the equity interest in the Company and will not encumber the transfer of the equity
interest you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ DENG Dunxia
	DENG Dunxia

 Appendix 17 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 0.86% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, LIU Niya, HU Guizhou, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 99.14% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ ZHANG Shu
	ZHANG Shu

 Appendix 18 
 Announcement Letter 
 Beijing Yanyu Water Tech Co., Ltd. (the “Company”) is a
limited liability company established on March 29, 2008 and validly existing under the laws of the PRC. I, as a shareholder of the Company, hold a 0.86% equity interest in the Company. I, together with the other shareholders, GUO Song, WANG Yi,
MA Jifeng, ZHUANG Yongzhen, WANG Jianqiu, XU Peiliang, HUANG Qian, WANG Yanmin, JIA Hui, WANG Ziqiang, DONG Pengyu, WANG Yiguo, DENG Dunxia, MIAO Haitao, SU Guiying, HU Guizhou, ZHANG Shu, and Beijing Yan Yu Communications Telemetry United New
Technology Development Department hold a 100% equity interest in the Company. I hereby irrevocably waive any pre-emptive right I may have upon the other 99.14% equity interest in the Company and will not encumber the transfer of the equity interest
you proposed in any way. 
 This Announcement Letter is effective as of November 28, 2008. 
  

	
	
	/s/ LIU Niya
	LIU Niya

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