Document:

Exhibit 10.42

 Exhibit 10.42 
 CONTRACT FOR THE SALE OF INDUSTRIAL AND MINERAL PRODUCTS 
 Serial number: QBWZ/JL-020 

 Contract No.: Material company 2008-49-17.2-10-30 
  

			
	Seller: Nanjing Recon Technology Co., Ltd.	  	Signing site: Ge’ermu
		
	Buyer: PetroChina Qinghai Oilfield Co., Ltd.	  	Signing date: 11/24/2008

 1. Description of the goods 
  

													
	 Name
	  	 Specification
	  	 Unit
	  	Quantity	  	Unit Price
(RMB)	  	Total value	  	 Delivery date

	Oil-well remote Unit	  	 1#, 2#, 3#,5#
 Gas-collection Station
	  	Per well	  	71	  	38,391.10	  	2,725,768.10	  	Within one week after the subscription of this contract

	
	Planned 17.2-10-10
	TOTAL SUM: 2,725,768.10

 2. Quality Standard: See the Technical Agreement 
 3. Terms of Seller’s obligations: Execute 3-guarantees (repair, replacement and refund) and the producing standards. One year quality guarantee period. 

4. Packing standard, provision and draw-back of the wrappage: Comply with the General Technical Terms of Mechanical and Electric Products. The wrappage would not
drawn-back and there is no extra expenses. 
 5. Additional necessaries, accessories, quantity of tools and the provision-measure: Product Certifications and
Quality Certifications will be provided. 
 6. Reasonable standard of impairment and method of calculation: Make payment for the actually arriving and
inspecting goods. 
 7. ownership of subject matter will be transferred to the Buyer the goods arrive. For any reason the Buyer fail to act the right as the
payer, the ownership of the goods shall remain to the Seller. 
 8. Delivery manner and location: Seller shall delivery goods to the Central Material
Warehouse of Qinghai Oilfield Sebei Gas-field 
 9. Manner of transportation, destination and carriage: Motor vehicle transportation; Destination: Qinghai
Ge’ermu Sebei Gas-field; Transporation fees and other charges shall be paid by the seller. 
 10. Inspection standard, method, site and time limit:
Exercise the contract requirement as indicated in section 2, 4 of this agreement 
 11. Installation and Adjustment of the complete-equipment: NA 

12. Method of payment, time and location : 90% out of total payment will be paid after the installation and testing for the equipments, 10% payment will remain for
one year as quality guarantee deposit (no interest) 
 13. Method of Guarantee (A Guarantee Agreement can be included if for any necessary): 

14. Terms of Breach of contract: 
 15. Liability for breach of contract:
If the quality of the goods does not meet the provisions of the contract, the buyer has the right to return the goods, and all the losses caused by that shall be paid by the seller. 

 16. Settlement of dissension: The parties should settle any disagreement under the contract through negotiation. If the
parties fail to reach agreement through negotiation, one of the following ways may be used: 
  

	 	1)	Submit the case to arbitration commission to mediate. 

  

	 	2)	Engage in legal proceedings at the buyer’s Local People’s court. 

 17. This contract will come into effect on the signing date, thereafter. 
 18. Other engagements: 1) This contract is quadruplicate, the seller
holds one copy and the buyer holds another three copies. 2) The seller shall issue the Value-added tax invoice in compliance with the related state provisions. 3) The goods provided by the seller shall meet the request of the department and the
relevant requests of the QHSE System. 
 19. Both parties should follow the principle of “equality and mutual benefit, be honesty and trustworthy”

  

			
	 SELLER
	 	 BUYER

	Seller: Nanjing Recon Technology Co., Ltd	 	Buyer: PetroChina Qinghai Oilfield Co., Ltd.
		
	 Location:      1402 room, 123#, Jiqing Road, Qinhuai district,
                        Nanjing City
	 	Location: Mangya, Qinghai Province
		
	Legal representative:	 	Legal representative:
		
	Entrusting agent:	 	Entrusting agent:
		
	Deposit bank: [    ]	 	Deposit bank: [    ]
		
	Account number: [    ]	 	Account number: [    ]
		
	Tax number: [    ]	 	Tax number: [    ]
		
	Postal code:	 	Postal code: 816000
		
	Phone number: [    ]	 	Phone number: [    ]
		
	Fax number: [    ]	 	Fax number: [    ]Exhibit 10.43

 Exhibit 10.43 
 Contract code: CAI-2007-STORE-012 
 CONTRACT OF MATERIAL RESERVES AND SALES 
 This Contract is made on April 25, 2007 at HuaTuGou, MangYa, Qinghai, Province 
 BETWEEN: Beijing BHD Petroleum Technology Co., Ltd. (the “Seller”), a corporation organized and existing under the laws of the PRC. 
 Phone Number: Mr. ZhiQiang Feng: 13897078018 
 Postcode: 710006 
 AND: PetroChina QingHai Oilfield Co., Ltd (the “Buyer”), a corporation organized and existing under the laws of the PRC. 
 Phone Number: 0937-8912430/8923491 
 Postcode: 736202 
  
  
 According to the material purchases tender offer outcome on
2005, the Buyer shall render the services of material reserves and sales to the Seller. For the purpose of defining the obligations of both parties, we hereby conclude this contract according to The Contract Law of the People’s Republic of
China. 
  

	1.	Subject matter of the contract: See the accessory form 

  

	2.	Delivery term and quality guarantee period: See the accessory form 

  

	3.	Contract value and the method of payment: 

  

	3.1	Contract value: RMB1,034,182.89 (RMB One million thirty-four thousand one hundred eighty-two point eighty-nine) 

  

	3.2	Method of payment: Adopt the method of agential reserves and sales; determine the name, stipulation and model of the agential reserves and sales material according to the outcome of
the tender; the seller shall, at the sight of the provision notice and within the delivery term, provide the material to the buyer according to the plan which is submitted by the buyer. The seller shall pay the material expense quarterly after
making use of them. The seller agrees to remain 5% out of Purchase price as quality guarantee deposit. The guarantee deposit will be collected when the quality guarantee period is complete, and without quality problems. If any quality problems
arises during the quality guarantee period and the seller cannot complete the maintenance, there will be no return of this deposit. (The quality guarantee period will be calculated the first date the buyer starts to use the seller’s products.)

  

	3.3	On the twenty-fifth date of the last month of each quarter, the seller shall collect the payment with carrying this contract, quality inspection report which is signed by the buyer,
usage of material report, investigation report of contract performance issued by the first oil-extraction factory and the Value-Added Tax invoice. All the payment shall be made by the Settlement Center of Qinghai Oilfield. 

 

	3.4	The seller shall issue the official VAT Invoice according to provisions of the State Administration of Taxation, or the buyer shall refuse to exercise the payment.

	4.	Time limit on agential reserves and sales: 04/25/2007 - 04/25/2008 

  

	5.	Inspecting standard: 

  

	5.1	The inspecting standard will be the “General Principle of Material Purchase” (SY/T6008-94). The products by which the seller has won the bid shall meet the single standard
and relevant technical standards. 

  

	5.2	The quality guarantee period will be calculated the first date the buyer starts to use the seller’s products. 

  

	6.	Manner of transportation and freight: The manner of transportation could be freely chosen by the seller, and the seller shall pay the freight to Huatugou. 

 

	7.	Site of delivery and inspection: The equipment provision station of the first oil-extraction factory of Qinghai province Mangya Huatugou 

  

	8.	Reasonable impairment and method of calculation 

  

	8.1	There shall be no impairment to be calculated. 

  

	8.2	The seller must guarantee that the goods which will be delivered must be in good condition. 

  

	9.	Packing standard, provision and draw-back of the wrappage: 

  

	9.1	Pack the goods with wooden crate or follow the manufacturer’s standards of packing. 

  

	9.2	The seller is responsible for the packing and there shall be no packing expenses calculated. 

  

	9.3	The wrappage is not drawn-back. 

  

	10.	Additional accessories: 

  

	10.1	The information provided by the seller must contain the product instructions and examination report. 

  

	10.2	The accessories which are related to the goods must be complete. 

  

	11.	The obligations, rights and responsibilities for breach of contract 

  

	11.1	The buyer shall provide the seller in time with the schedule of material demand. 

  

	11.2	The buyer shall organize the inspection after the arrival of the goods. 

  

	11.3	The buyer shall make the payment according to this contract. 

  

	11.4	During the term of the agential reserves, the buyer shall keep the materials in good condition. If there is any damage that is made to any of the materials, the buyer shall pay the
penalty according to the bid price of the damaged material. 

  

	11.5	The seller shall provide the goods within the delivery term. The seller shall pay for a penalty of RMB500.00 a day in the delay period. 

  

	11.6	The seller shall guarantee the materials that they are providing are qualified. If any quality problems arise during the quality guarantee period, the seller shall be responsible
for the maintenance and other losses caused by this circumstance, and the buyer has the right to terminate this contract. 

  

	11.7	If the materials delivered by the seller fail to pass the buyer’s inspection for the first time, the seller shall replace them and rearrange the delivery; if they fail for the
second time, the buyer has the right to terminate this contract and seller is responsible for all the losses of the buyer caused by that. 

  

	12.	Settlement of disputes: The parties should settle the disputes caused by the contract through negotiation. If the parties fail to reach agreement through negotiation, both parties
agree to engage in legal proceedings at the signing location’s People’s court. 

	13.	Other terms: 

  

	13.1	This contract will come into effect after signing and stamping by both parties. 

  

	13.2	The contract’s accessories and complementary agreements are part of the contract and have the same legal effectiveness. 

  

	13.3	The accessory form to this contract: The agential reserves and sales bidding schedule of burner. 

  

	13.4	There are two originals and five copies of this contract. The buyer shall hold one original and four copies of contract and seller shall hold one original and one copy of the
contract. 

  

					
	Buyer:	  	The first oil-extraction factory of Qinghai Oilfield	  	Seller: Beijing BHD Petroleum Technology Co., Ltd.
			
	Representative:	  	Ma Baining	  	Representative: Feng Zhiqiang
			
	Signing date:	  	25th April, 2007

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