Document:

Purchase agreement with E-Ton Solar Tech Co., Ltd., dated October 23, 2006

 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24-b2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
 Exhibit 10.36 
 

 
 1075 Opakapaka St., Kapolei, HI 96707 
 (808) 682-7800 (Main) (808) 682-7807 (Fax) 
 PURCHASE ORDER #: 061023HS 
  

			
	Date:	  	23-Oct-06
		
	Requested By:	  	Stephanie Ito
		
	Vendor Name:	  	E-ton Solar Tech
		
	Attention:	  	_________________________________________
		
	Vendor Ph. #:	  	886-6-3840777 x2609
		
	Vendor Fax #:	  	886-6-3840966

  

											
	 Vendor Product
 #/Code
	  	 Description
	  	Quantity	  	 Unit
 Price
	  	Extended Price
	 ETS5170
	  	5” (125mm) single crstal Si solar cell- 2.46W	  	[*]	  	$	 [*]	  	$	 [*]
					
	 ETS5165
	  	5” (125mm) single crstal Si solar cell- 2.39W	  	[*]	  	$	 [*]	  	$	 [*]
					
	 ETS5160
	  	5” (125mm) single crstal Si solar cell- 2.32W	  	[*]	  	$	 [*]	  	$	 [*]
					
	 ETS5155
	  	5” (125mm) single crstal Si solar cell- 2.24W	  	[*]	  	$	 [*]	  	$	 [*]
					
	 ETS5170
	  	5” (125mm) single crstal Si solar cell- 2.46W	  	[*]	  	$	 [*]	  	$	 [*]
					
	 ETS5165
	  	5” (125mm) single crstal Si solar cell- 2.39W	  	[*]	  	$	 [*]	  	$	 [*]
					
	 ETS5160
	  	5” (125mm) single crstal Si solar cell- 2.32W	  	[*]	  	$	 [*]	  	$	 [*]
		  		  		  			  	 	 
		  		  		  	 	Tax	  	$	2,760,668.80
		  		  		  			  	 	 
		  		  		  	 	Shipping	  		
		  		  		  			  	 	 
		  		  		  	 	Other	  		
		  		  		  			  	 	 
		  		  	TOTAL (Net 30 Days)	  	$	2,760,668.80
		  		  		  			  	 	 

 Purchase Order Review 
  

							
	Ordered by:	  	 /s/ Dustin Shindo
	  		  	Date: October 23, 2006
	Print Name:	  	Dustin Shindo	  		  	
			
	PO number to be printed on packing slip	  		  	
		  	061023HS	  		  	

 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  

					
	

	  		  	 E-TON SOLAR TECH. CO., LTD.
 No. 498, Sec.
2, Bentian Rd., An-Nan Dist.,
 Tainan Tech. Industrial Park, Tainan 709 Taiwan
 TEL: 886-6-3840777 EXT.2609 fax: 886-6-3840966
 E-mail: business@e-ton.com.tw

 PROFORMA INVOICE 
  

							
	 DELIVERY TO:
  
 Mr. Scott Paul
 Hoku Scientific, Inc.
 1075 Opakapaka St., Kapolei, HI 96707-1887
 USA
 Tel: 808.682.7800 Tax: 808.682.7807
	  	 NO.
  
 PO6109Hoku
	  	 DATE
  
 2006/10/19

	  	  
 CUSTOMER P/O NO.
	  	  
 CUSTOMER P/O DATE

	  	  
 PAYMENT TERM,
  
 T/T in advance
	  	  
 DELIVERY DATE
  
 TBD
	  	  
 DELIVERY TERM
  
 EXW

	  
 ORIGIN
  
 TAIWAN
	  	  
 DESTINATION & COUNTRY
  
 USA
	  	  
 SHIPPING CO.
  
	  	  
 FREIGHT
  
 Freight Collect

  

												
	 Item No.
	  	 DESCRIPTION
	  	Q’ty/pcs	 	 	UNIT
PRICE/USD	 	 	AMOUNT/
USD	 
		  	5” SINGLE-CRYSTALLINE SILICON SOLAR CELL 122mm x 125mm (PSEUDO-SQUARE)	  			 			 		
	 1
	  	Part No.:ETS5170(16.5~17%) average output power: 2.46watt	  	[	*]	 	[	*]	 	[	*]
	 2
	  	Part No.:ETS5165(16~16.6%) average ouptut power: 2.39 watt	  	[	*]	 	[	*]	 	[	*]
	 3
	  	Part No.:ETS5160(15.5~16%) average output power: 2.32watt	  	[	*]	 	[	*]	 	[	*]
	 4
	  	Part No.:ETS5155(15~15.5%) average output power: 2.24 watt	  	[	*]	 	[	*]	 	[	*]
		  		  	 	 	 			 	 	 
		  	 Total
	  	[	*]	 			 	US$2,194,100.80	 
		  		  	 	 	 			 	 	 

 NOTE: 
 1.
This Proforma Invoice is valid within one week from the issuing date 
 2. The quantity of each item may be rearranged due to fluctuations of
production; however, E-TON will deliver cells with the same total value 
 3. Please sign and fax the proforma invoice to confirm this order and
please remit the payment to the following account immediately to secure the above mentioned cells. 
 Account Number: [*] 
 Account name: E-TON SOLAR TECH. CO., LTD. 
 Bank: E. SUN COMMERCIAL BANK
INTERNATIONAL BANKING DIVISION, TAIPEI, TAIWAN 
 Swift: ESUNTWTP 
  

			
	Signature	 	 /s/ Dustin Shindo

		 	(Please sign and fax it back)
		
		 	Hoku Scientific, Inc.
		 	Dustin Shindo
		 	Chairman & CEO

 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  

					
	

	  		  	 E-TON SOLAR TECH. CO., LTD.
 No. 498, Sec.
2, Bentian Rd., An-Nan Dist.,
 Tainan Tech. Industrial Park, Tainan 709 Taiwan
 TEL: 886-6-3840777 EXT.2609 fax: 886-6-3840966
 E-mail: business@e-ton.com.tw

 PROFORMA INVOICE 
  

							
	 DELIVERY TO:
  
 Mr. Scott Paul
 Hoku Scientific, Inc.
 1075 Opakapaka St., Kapolei, HI 96707-1887
 USA
 Tel: 808.682.7800 Tax: 808.682.7807
	  	 NO.
  
 PO61020Hoku
	  	 DATE
  
 2006/10/20

	  	  
 CUSTOMER P/O NO.
	  	  
 CUSTOMER P/O DATE

	  	  
 PAYMENT TERM,
  
 T/T in advance
	  	  
 DELIVERY DATE
  
 TBD
	  	  
 DELIVERY TERM
  
 EXW

	  
 ORIGIN
  
 TAIWAN
	  	  
 DESTINATION & COUNTRY
  
 USA
	  	  
 SHIPPING CO.
  
	  	  
 FREIGHT
  
 Freight Collect

  

									
	 Item No.
	  	 DESCRIPTION
	  	 Q’ty/pcs
	  	 UNIT
 PRICE/USD
	  	 AMOUNT/USD

		  	5” SINGLE-CRYSTALLINE SILICON SOLAR CELL 122mm x 125mm (PSEUDO-SQUARE)	  		  		  	
	 1
	  	Part No.:ETS5170(16.5~17%) average output power: 2.46watt	  	[*]	  	[*]	  	[*]
	 2
	  	Part No.:ETS5165(16~16.6%) average ouptut power: 2.39 watt	  	[*]	  	[*]	  	[*]
	 3
	  	Part No.:ETS5160(15.5~16%) average output power: 2.32watt	  	[*]	  	[*]	  	[*]
		  		  	 	  		  	 
		  	 Total
	  	[*]	  		  	US$566,568.00
		  		  	 	  		  	 

 NOTE: 
 1.
This Proforma Invoice is valid within one week from the issuing date 
 2. The quantity of each item may be rearranged due to fluctuations of
production; however, E-TON will deliver cells with the same total value 
 3. Please sign and fax the proforma invoice to confirm this order and
please remit the payment to the following account immediately to secure the above mentioned cells. 
 Account Number: [*] 
 Account name: E-TON SOLAR TECH. CO., LTD. 
 Bank: E. SUN COMMERCIAL BANK
INTERNATIONAL BANKING DIVISION, TAIPEI, TAIWAN 
 Swift: ESUNTWTP 
  

			
	Signature	 	 /s/ Dustin Shindo

		 	(Please sign and fax it back)
		
		 	Hoku Scientific, Inc.
		 	Dustin Shindo
		 	Chairman & CEO

 

 
  

 [*] = CERTAIN CONFIDENTIAL INFORMATION
CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2
OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
 E-Ton Solar Tech. Co., Ltd. No. 498, Sec. 2, Bentian Rd., Tainan, 709 Taiwan Tel: 886-6-3840777 
 Fax: 886-6-3840966 E-mail: business@e-tonsolar.com 5” Mono-crystalline Solar Cell Catalog Dimensions 125mm x 125mm ± 1mm (pseudo-square) Diagonal 150 ± 1mm (round chamfers) Thickness 200μm ±
40μm / 240μm ± 30μm / 270μm ± 30μm Front Silver bus bars; Dark/light blue purple/brown/gray silicon nitride antireflection coating Back Silver/aluminum bus bars; Full-surface aluminum BSF Features 1.
Excellent color uniformity 2. Excellent SiNx coating 3. Excellent spectral response in short wavelength 4. No residual dark point 5. Long Lifetime (>20 years) Conversion Efficiency (%) Rated Power (Wp) Maximum Power Current (A) Maximum Power
Voltage (V) Short Circuit Current (A) Open Circuit Voltage (V) Fill factor (%) ETS5100 ETS5110 ETS5120 ETS5130 ETS5140 ETS5145 ETS5150 ETS5155 ETS5160 ETS5165 ETS5170 ETS5175 ETS5180 <10 10 – 11 11 – 12 12 – 13 13 – 14 14
– 14.5 14.5 – 15 15 – 15.5 15.5 – 16 16 – 16.5 16.5 – 17 17 – 17.5 17.5 – 18 
 <1.47 1.47–1.62 1.62–1.76 1.76–1.91 1.91–2.06 2.06–2.13 2.13–2.21 2.21–2.28 2.28–2.35 2.35–2.43 2.43–2.50 2.50–2.57 2.57–2.65 
 <3.2 3.17 – 3.5 3.48 – 3.78 3.75 – 4.07 4.05 – 4.36 4.34 – 4.48 4.46 – 4.62 4.59 – 4.73 4.65 –
4.8 4.72 – 4.88 4.8 – 4.94 4.85 – 4.99 4.96 – 5.12 
 <0.460 0.463 0.466 0.469 0.472 0.475 0.478 0.482
0.490 0.498 0.506 0.515 0.518 <3.83 4.20 4.50 4.70 4.90 5.08 5.14 5.19 5.23 5.27 5.31 5.33 5.42 
 <0.582 0.584 0.586
0.588 0.590 0.592 0.594 0.596 0.599 0.602 0.609 0.615 0.618 <62.4 63.2 64.1 66.6 68.8 69.9 71.1 72.8 74.1 75.7 76.2 77.2 77.9 
 * Under standard test condition: 1000W/m2,AM 1.5, 25.. * All figures bear ±5% of tolerance 

 

 
  

 [*] = CERTAIN CONFIDENTIAL INFORMATION
CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2
OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
 E-TON SOLAR TECHNICAL SPECIFICATION 
 1. Applications This specification is
applied to E-Ton 5” Mono-crystalline Solar Cell. 
 2. Testing Condition Irradiance
1000W/m2 calibrated by E-Ton’s standard cell Light Source Xenon short arc lamp with AM 1 .5 Filter 
 Testing Temperature
25±3°C 3. Product Features Substrate P-type single-crystalline silicon wafer 
 Structure n+/p/p+ Appearance
Front-side : Dark Silicon Nitride antireflection layer 
 Back-side : Aluminum layer with
BSF Size: 125mmx 125mm ±1.0 mm (pseudo-square) Diagonal : 150mm ±1.0 mm (round chamfers) Dimensions Area : 147 cm2 Thickness : 200μm ± 30μm / 240μm ± 30μm / 270μm ± 30μm /
300μm ± 30μm 
 Weight Less than 15g Coefficient The coefficient of current (Alpha) is
0.07±0.015%/°C The coefficient of voltage (Beta) is -0.3 13±0.015%/°C The coefficient of power (Gamma) is -0.41±0.05%/°C 125.0 125.0 2.0 62.5 150.0 125.0 125.0 5.0 62.5 150.0 
  

 

 
  

 [*] = CERTAIN CONFIDENTIAL INFORMATION
CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2
OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
 4. Product Characteristics 
 a. Spectrum Response 
 5. Packing 
 The goods are packed into the container with suitable quality, which protects them from damage during the transportation. 
 5.1 Every 50 cells arc sealed by Shrinkable Film 
 5.2 Every 20 Shrinkable Film packages (1000 pcs) are put
in one Carton Box 
 6. Notes 
 6.1 Color classification 
 Please kindly note that the cells are classified
into five major colors as stated in the product catalog, including Dark Blue, Purple, Brown, Light Blue, and Gray. Cells with mixed color of Dark Blue, Purple, and Brown or Dark Blue and Light Blue are also within the standard. After module
encapsulation, the color difference will be significantly reduced; therefore, it won’t affect the color uniformity of the module. Each carton box has a label to remark the color of the cells inside. When putting the cells into production of PV
modules, please DO NOT mix cells with different colors in one module, otherwise it may affect the color uniformity of one single module. 
 6.2 Handling 
 Avoid handlings happened as follows because they may cause electrical or soldering performance
degradation. 
 a. Handling with hands without plastic gloves 
 b. Avoiding careless and violent handling since this causes damage or cracks 
 c. Contacting with corrosive chemicals or gases 
 d. Scrubbing the surface 
 6.3 Storage 
 Keeping away from corrosive chemicals or gases and keeping in the storage room 

 

 
  

 [*] = CERTAIN CONFIDENTIAL INFORMATION
CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2
OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
 with temperature at around 20°C 
 Do not expose cells to the air. It is
recommended to use the cells ASAP after unpacking. 
 6.4 Humidity resistance 
 This product is not humidity-resistant so it needs to be covered with glass, waterproof films and resin to maintain the long- term
reliability. 
 7. Others 
 Any doubt in this document or any testing dispute shall be determined by both parties in good faith upon mutual consultation. If there is no consultation, E-Ton will settle this argument. This document belongs to E-Ton so no
other party can share this specification with third party without the written agreement of E-Ton. 
 Buyer: Hoku Scientific,
Inc. 
 Seller: E-Ton Solar Tech. Co., LTD. 
 Chairman: Dustin Shindo 
 Chairman: Stephen Wu 
 Authorized Representative: Dustin Shindo 
 Authorized Representative: John Tsai 
 President Dustin Shindo 
 TEL: 1 (808) 682-7800 
 TEL: 886-6-3840777 ext: 2609 
 FAX: 1 (808) 682-7807 
 FAX: 886-6-3840966 
 Address: No.498, Sec.2, Bentian 
 Address: 1075 Opakapaka Street 
 Rd.,An-Nan Dist., Tainan 709 TAIWAN 
 Kapolei, HI 96707 
 Buyer Seller 
 Hoku Scientific, Inc. 
 Dustin Shindo Chairman & CEO 
  

 

 
  

 [*] = CERTAIN CONFIDENTIAL INFORMATION
CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2
OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
 E-TON SOLAR TECH. CO., LTD. 
 No.498. Sec.2, Bentian St., An-Nan Dist.,

 Taiwan Tech. Industrial Park, Taiwan 709 Taiwan 
 TEL: 886-6-3340777 ext.2608 FAX: 886-6-3840966 
 E-mail: business@e-tonsolar.com 
 QC Inspection Criteria 
 Grade Color Chip Crack Flake Spot Line Breakage Mis-align 
 A+ (Premium) No No No No Dull Spot<3mm <0.5mm Alignment shift<0.5mm 
 A- (Premium) Edge discolor <5mm No No <3mm(L)x0.5mm(D) Dull Spot<5mm Smudge<5mm <1mm <5lines Alignment shift<1mm 
 A-(Off-Grade Edge discolor>5mm No No <5mm(L)x0.5mm(D) Dull Spot>5mm Smudge>5mm >1mm >5lines Alignment shift>1mm 
 B (Chipped) <1.5x1.5 cm2 >5mm(L)x0.5mm(D) 
 C (Broken) >1.5x1.5 cm2 
 Signature & Date: Hoku Scientific, Inc,
Dustin Shindo 
 Chairman & CEO 
  

 

 
  

 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY
BRACKETS, HAS BEEN OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24B-2 OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
 E-TON SOLAR TECH. CO., LTD. 
 No.498, Sec.2, Bentian Rd., An-Nan Dist.,
Tainan 709, TAIWAN 
 TEL : 886-6-3840777 ext: 2605/ 2608/ 2609 
 FAX : 886-6-3840966 
 E-Mail: business@e-ton.com.tw 
 Acceptance of Goods / Quality Policy 
 Buyer: Hoku Scientific, Inc. Seller: E-ton Solar Tech. Co., LTD. 
 1 Agreed quality of the cells 
 1.1 The quality of the cells supplied is such that the cells will achieve at least the performance shown in Addition 1 – Specification of cells. 
 1.2 Performance guarantees are also specified in Addition 1 – Specification of cells. 
 1.3 Liability after the end of the warranty period specified in Addition 2- Warranty, is limited to the replacement of defective cells or
compensation as specified in Addition 1 – Specification of cells. 
 2 Complaints about defective goods 
 2.1 Buyer is obligated to inspect deliveries for obvious defects without delay. Buyer shall inform Seller of any defect found by complaint
report. A complaint must be taken into account by Seller only if it is sent without delay, at the latest however within 20 calendar days of delivery, excluding holidays. In this case, Buyer will collect the concerned cells and will send them back to
Seller. Cost for the returning of cells is carried by Seller. 
 2.2 If there will be no feedback within 20 calendar days from
Buyer to Seller the cells are considered as accepted by Buyer. 
 3 Warranty period 
 3.1 Applicable warrantees are specified in Addition 2 – Warranty. 
 3.2 The warranty period shall begin upon the date of shipment of the cells from the factory. A warranty shall apply to the quality of the
cells as agreed in Addition 1 – Specification of cells. 
  

 

 
  

 [*] = CERTAIN CONFIDENTIAL INFORMATION
CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2
OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
 Addition 1 – Specification of cells. 1.) Examination of quality 
 Before
shipment from factory, all cells will be submitted to an electrical and an optical examination. The data determined from the electrical measurements, will clearly point out the assortments of the classes, according to the respective data sheet. 2.)
Performance guarantee 
 The Seller guarantees the Buyer that the supplied cells will achieve an output performance of at
least ninety (90) percent of the stated Wp-power of the cell during a period of ten (10) years and/or an output performance of eighty (80) percent during a period of twenty five (20) years of the original performance. 

The Seller will supply - at the Seller’s choice - additional cells or will exchange previously supplied underperforming cells, if
the performance of the cells falls below 90% and/or 80% of the original performance within the guarantee period. The warranty for such replacement extends only to the remaining original guarantee period. 
 The cell performances are measured under industry standard test conditions (25 C° cell temperature, irradiation 1,000 W/m2 and AM 1.5)
3.) Changes in Design 
 Change in Design of the product or significant changes in the production process and/or the
characteristic data of the product must be announced and agreed upon before supply. Seller has the right to improve the products and therefore to make changes for the benefit of the Buyer. Eventual changes are executed only in coordination with the
Buyer and only after written consent of the Buyer to the changes. 4.) Data sheet 
 Refer to “E-TON SOLAR TECHNICAL
SPECIFICATION”, “5” Single-crystalline Solar Cell Catalog”, and “QC Inspection Criteria”. Addition 2 - Warranty Durability and storage warranty 
 The Seller guarantees for the fact that the supplied cells are free from processing errors. It is not recommended to stock up the cells
supplied by Seller. Buyer shall always process the cells immediately after the acceptance of the cells. 
 The appropriate
period for the treatment of a complaint, is maximally 20 calendar days. Seller will take complaints of quality only if the complaints are submitted by Buyer within 20 calendar days, excluding holidays. 
 Buyer: Hoku Scientific, Inc. 
 Seller: E-ton Solar Tech. Co., LTD. 
 Chairman: Dustin Shindo 
 Chairman: Stephan Wu 
 Authorized Representative Dustin Shindo 
 Authorized Representative: John Tsai 
 TEL: 1.808.682.7800 
 TEL: 886-6-3840777 ext: 2609 FAX: 1.808.682.7807 
 FAX: 886-6-3840966 Address: 1075 Opakapaka St., Kapolei,

 Address: No.498, Sec.2, Bentian Rd., HI 96707-1887 USA An-Nan Dist., Tainan 709 TAIWAN Buyer Seller Hoku Scientific, Inc.
Dustin Shindo 
 Chairman & CEOPurchase and sale agreement with Spire Corporation, dated October 13, 2006

 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 Exhibit 10.37 
 PURCHASE AND SALE
AGREEMENT 
 October 13, 2006 
  

	1.	The Parties: 

 Spire Corporation (the “Seller”),
a business incorporated in the Commonwealth of Massachusetts, with its principal place of business at One Patriots Park, Bedford, Massachusetts, 01730-2396, U.S.A.; 
 Hoku Scientific (the “Buyer”), a business established in the state of Hawaii, with its principle place of business at 1075 Opakapaka Street, Kapolei, Hawaii 96707-1887, USA 
  

	2.	Terms of Agreement: 

 Seller agrees to sell to Buyer and
Buyer agrees to buy from Seller the Products described in Article 3 below, pursuant to the provisions of the Purchase and Sale Agreement hereinafter set forth. Such provisions shall prevail and no other article, condition, clause or term shall have
any effect unless specifically admitted by this document. 
  

	3.	The Products bought by Buyer and sold by Seller are set forth in this Article and will be shipped to Seller on or before May 31, 2007. Partial shipments are allowed as needed
and any shipment may be transshipped as may be appropriate. The specifications of the Products are delineated in Attachment A hereto: 

  

	 	a.	[*] 

  

	 	b.	[*] 

  

	 	c.	[*] 

  

	 	d.	[*] 

  

	 	e.	[*] 

  

	 	f.	[*] 

  

	 	g.	[*] 

  

	 	h.	[*] 

  

	 	i.	[*] 

  

	 	j.	[*] 

  

	 	k.	[*] 

  

	 	l.	[*] 

  

	 	m.	[*] 

 Note: Shipments schedule are contingent
upon receipt by Seller of Buyer’s Down Payment on or before October 31, 2006. Any failure by Buyer to adhere to the payment plan as outlined in Article 4 may cause Seller to revise the shipment schedule. 
  

 1 

 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  

	4.	Price and Terms of Payment: 

 The price for the Products,
including technical documents, technical services, and technical training, as set forth above is a total of U.S. Dollars $ 2,011,200.00 (Two Million, Eleven Thousand, and Two Hundred US Dollars), Ex Works Spire Corporation, Bedford, Massachusetts,
USA, and Okazaki, Japan 
  

					
	 No.
	  	 Description
	  	 Price (US$)

			
	 1
	  	[*]	  	[*]
			
	 2
	  	[*]	  	[*]
			
	 3
	  	[*]	  	[*]
			
	 4
	  	[*]	  	[*]
			
	 5
	  	[*]	  	[*]
			
	 6
	  	[*]	  	[*]
			
	 7
	  	[*]	  	[*]
			
	 8
	  	[*]	  	[*]
			
	 9
	  	[*]	  	[*]
			
	 10
	  	[*]	  	[*]
			
	 11
	  	[*]	  	[*]
			
	 12
	  	[*]	  	[*]
			
	 13
	  	[*]	  	[*]
			
	 14
	  	[*]	  	[*]
			
	 15
	  	[*]	  	[*]
			
		  	Total	  	$2,011,200.00

 Buyer shall arrange for milestone payments to Seller in accordance with the schedule outlined
below: 
  

	 	a.	Buyer shall make a non-refundable Down Payment to Seller by telegraphic transfer as soon as possible after execution of this Agreement but on or before October 31, 2006 based
upon Seller’s invoice, in the amount of US$703, 920.00 (Seven Hundred and Three Thousand, and Nine Hundred and Twenty U.S. Dollars). 

  

	 	b.	Buyer subsequently shall establish irrevocable, transferable, and divisible confirmed Letters of Credit for the remaining balance price of the Products of each shipment, sixty
(60) days prior to the shipment in the amounts listed in the schedule below: 

 A Letter of Credit of US$1,307,280.00 (One
Million, Three Hundred and Seven Thousand, and Two Hundred and Eighty U.S. Dollars) shall be established. Such Letter 

  

 2 

 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 
of Credit shall be established on or before sixty (60) calendar days of the date of Ex-Works shipment of the Products. The expiration date for the
Letter of Credit described in this Article shall not be earlier than one hundred and twenty (120) days from the date of the last scheduled shipment. Such Letter of Credit shall be drawable by Seller in two (2) sequences; 1) a draw of
US$1,106,160.00 (One Million, One Hundred and Six Thousand, and One Hundred and Sixty US Dollars) upon presentation of applicable shipping documents for the Ex-Works shipment; and 2) a draw of US$201,120.00 (Two Hundred and One Thousand, and One
Hundred and Twenty US Dollars) upon presentation of applicable completion of installation documents. Other terms and conditions of this Letter of Credit shall be in accordance with the document entitled “Letter of Credit Requirements” and
attached hereto as Exhibit No.1. Buyer agrees to amend this Letter of Credit promptly upon Seller’s request provided that Seller furnishes a satisfactory and reasonable explanation for such amendment, and that the terms of the amendment are
mutually agreed upon by Buyer and Seller. 
  

	5.	Performance and Performance Period: 

  

	 	a.	Conditions precedent for Seller to begin performance: 

  

	 	1.	Purchase and Sale Agreement signed by both Parties; 

  

	 	2.	Down payment received by Seller on or before October 31, 2006. 

  

	 	b.	Performance: Seller shall make delivery in full of the of the Products, including all Product components, installation at the Buyer’s site in accordance with standard
industry practices as well as equipment training (use and maintenance), using its best efforts in accordance with the shipment schedule in Article 3. Installation shall be defined as the mechanical set-up of all applicable Products (equipment)
including the disposition of each Product in its proper location, and the mechanical operation such that the Product performs the mechanical functions it was designed for as outlined in Attachment A, including connection with the required utilities
(electricity, gas, water, compressed air, etc.). All training services, training materials, equipment manuals, and the like shall be provided to Buyer by Seller prior to the Ex- Works shipment of the Products. Process training shall be conducted in
accordance with the agenda and schedule to be mutually agreed upon by Seller and Buyer, and shall be completed prior to the Ex- Works shipment of the Products. The training is scheduled for a three (3) week term at Seller’s facility. This
requirement may be waived or altered by Buyer at its discretion (except that any constriction of this period may affect the total price as stated above). Every deliverable component shall be new; with high quality workmanship, good quality; free of
any design defects that may inhibit the smooth operation; and which satisfies the purpose of this Agreement. Each unit of deliverable equipment shall correspond to the specifications attached as Attachment A; be accompanied by a standard spare parts
package which shall be defined by Seller prior to Ex- Works shipment; and be subject to a limited warranty as specified elsewhere in Article 8 of this Agreement. 

  

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 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 All of the Products and related components delivered by the Seller shall be packed using new and strong packaging appropriate for shipping,
transportation, loading and unloading. According to the requirements of each unit of equipment and any other items included with them, the Seller shall, consistent with accepted industry standards, supply any protection necessary to protect such
equipment and other items from humidity, water, rust, erosion, or any other environmental factor which may damage the equipment or other items, and to insure that the Products arrive at the Buyer’s site safe and intact. 
 Each package, box or crate shall include the following documents: 
  

	 	1.	Two copies of a detailed packing list; 

  

	 	2.	Two copies of quality certificated; 

  

	 	3.	Operation, service and repair manuals 

  

	 	4.	Spare parts list; 

  

	 	5.	Two copies of assembly drawing as required for routine repair and maintenance. 

  

	 	c.	Performance Period: The period of performance shall commence when the conditions precedent as described above are met and shall conclude with the delivery of the Products,
the installation of the same at a site specified by the Buyer, and training is completed. 

  

	 	d.	Penalty for Late Delivery: Seller shall pay a penalty for failing to deliver the Product(s) on schedule in accordance with this Agreement’s Article 3. Specifically,
beginning on the sixteenth day after the date stated in Article 3, Seller shall pay a penalty equal to 0.5% of the total value of the Product(s) as set forth in Article 4 for each seven (7) day period, or fraction thereof, the delivery of the
Products is delayed. The penalty shall not in any case exceed an amount equal to 2.5% of the value of this Agreement in the aggregate. 

  

	6.	Alterations to Product: 

 The Products specified in Article
4 above and as described in detail in Attachment A hereto are standard Products manufactured and assembled by Seller. Any requirement by Buyer to have Seller modify specifications and features of the Products may affect the price, even if such
modification eliminates a feature or relaxes a specification, as all changes require an engineering charge. Other charges may apply. Buyer will submit all such requirements to Seller as soon as they become known. Seller will advise Buyer as soon as
practical the effect all such requirements are estimated to have on price, delivery schedule, performance, and warranties as herein stated. In particular, Buyer agrees that any subsequent requirement other than addressed above thereafter agreed upon
by the 

  

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 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 
Parties will constitute a change in Seller’s performance requirements and may further affect the delivery schedule cited above. In the event of any
changes required by Buyer, Buyer hereby releases Seller from strict adherence to this schedule, although Seller is expected to use its best efforts to minimize or eliminate any delay that may result from changes required by Buyer. Seller reserves
the right to make changes to the type or source of parts used to manufacture the components of the Products to eliminate any procurement problems or to improve quality of operations. Such changes will be made without notice to Buyer, but
Seller’s responsibility to furnish Products equal or improved in quality shall not be altered. 
  

	7.	Certain Responsibilities of Buyer: 

  

	 	a.	Installation Site Preparation: Buyer will have an installation site, including utility/facility (power, water, compressed air, factory floor space) requirements, prepared for
Seller to install the Products at the time of its arrival at the location/address specified by Buyer, but in any case not later than thirty (30) days after the arrival of the last Product at such location/address. Failure by Buyer to make such
a site, including all required utility/facility items available at or before the expiration of the thirty day period will allow Seller, at its sole discretion, to consider itself absolved of any further performance with regard to training and
installation except at Seller’s convenience thereafter. Any delay for any reason (save for Force Majeure) arising with the Buyer that delays the completion of installation beyond ninety (90) days after the arrival of the Products at
Buyer’s site will cause the full amount of the outstanding balance at that time to become due and payable by Buyer, at Seller’s sole discretion. Buyer will promptly make the required change to the Letter of Credit to facilitate this
collection upon application of Seller. Seller shall, in such instance adjust its installation schedule for its own convenience but with consideration to Buyer’s schedule to the maximum extent possible. In addition, any direct added costs
incurred by Seller by reason of Buyer’s failure to proceed with installation of the Product and training of its personnel shall be charged to Buyer, invoiced separately, and payable thirty (30) days from invoice date. The site shall
possess all the utility/facility requirements as agreed by both parties. If the Seller’s technical staff is not able to arrive at the site as scheduled, the Buyer has the right to start installation and inspection. 

  

	 	b.	Inspection: The Buyer shall inform the Seller of the inspection date twenty (20) days prior to the scheduled date for inspection. Seller may send its representative(s)
to join in the inspection at its expense. If any part is missing, defective, damaged, or there is any other non-conformity present, Buyer shall notify Seller immediately in writing with appropriate documentation. Seller shall correct such
non-conformities in accordance with the warranty attached to the Agreement as Attachment B. Seller’s adherence to the terms of the warranty prior to the completion of installation does not in any way shorten the ordinary warranty period.

  

 5 

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IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 Seller has the right to photograph or videotape the container opening and inspection process. 
 If any defects are found within the warranty period for any reason, including but not limited to defects or improper materials used, the Buyer has the
right to have the Products and/or any of their components repaired and/or replaced under warranty by the Seller. 
  

	 	c.	Supplemental Training: Seller will provide supplemental training during the course of the installation process for up to four (4) operators per unit of equipment. All
such training is understood to be supplemental to the training conducted at Seller’s facility, and is associated with “on-the-job-training” conducted during the Installation process. All such trainees must be proficient in spoken and
written English, or Buyer must provide a skilled interpreter/translation expert to render Seller’s trainer/installer’s instructions into trainee’s native language in an effective and efficient manner. Seller will provide operation,
repair and maintenance manuals to Buyer in English, and will attempt to provide them to Buyer sufficiently in advance of the installation process to allow Buyer to translate or have them translated and copied. Seller does not warrant the content of
such documents if translated. 

  

	8.	Warranty: 

 Seller sells the Products set forth herein with
a Limited Warranty as shown in Attachment B hereto. It is this Limited Warranty and no other that shall apply to any claims of defects in parts and/or labor on any unit of the Products. Seller expressly disclaims any and all other promises or
guarantees that may be purported to apply. 
  

	9.	Standard for Equipment Acceptance & Completion: 

 Provided that the Buyer has satisfied its obligations as set forth herein, Seller will provide performance conditions in accordance with Attachment C hereto; the “Acceptance Protocol.” 
 In the event that the results of the Acceptance Protocol show that the Product(s) fail to meet one or more of the performance conditions, and such failure
is demonstrably attributable to the Seller, Seller, at no additional charge to Buyer, shall undertake actions to correct such defective performance. 
 The liabilities expressly assumed by Seller under this Agreement shall be Seller’s only liability hereunder, at contract and law, and Buyer hereby releases Seller from any and all liability and claims of liability in excess thereof.
Seller’s total aggregate maximum total liability shall be determined jointly by both Parties pursuant to an analysis of the deficiencies giving rise to any claim by Buyer. 
  

	10.	Indemnity: 

  

	 	a.	 Buyer shall indemnify, defend, protect and hold harmless Seller from any action, suit, complaint, allegation and controversy of whatever kind which originates in
Buyer’s 

  

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IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 
operation of the installed Products and the sale or use of any products that was manufactured using the Products, provided that Buyer failed to follow the
instructions for use provided by Seller in their entirety, and provided also that no portion of the cause has its origin in any act of gross negligence on the part of Seller. 
  

	 	b.	Seller shall indemnify, defend, protect and hold harmless Buyer from any action, suit, complaint, allegation and controversy of whatever kind which originates in Buyer’s use of
the products and the limited license to use same and is by a third party who claims its intellectual property is infringed thereby. Seller shall undertake, at its expense to defend on behalf of Buyer any such claim, and shall continue such defense,
or alternatively shall settle such claim as it sees fit but without liability to Buyer. Seller, at its discretion shall (i) eliminate the infringing feature(s) and seek recourse in an alternative method to address the absent feature,
(ii) remove the infringing component and substitute a non-infringing replacement, both at Seller’s expense, or (iii) refund all or part of Buyer’s payment as negotiated by the Parties. 

  

	11.	Confidentiality: 

 Certain matters regarding this
relationship embodied by this Agreement may be considered confidential or sensitive to one or the other Party to this Agreement. The Parties agree that all such matters, once identified, will be treated in accordance with the Confidential Disclosure
Agreement attached hereto as Exhibit #2. This Agreement does not confer any right of ownership to any technical data disclosed to Buyer for Process Technology development purposes, and Buyer shall not release any technical data to any third party
without the written approval of Seller. 
 Notwithstanding the foregoing and the terms of the Confidential Disclosure Agreement attached
hereto as Exhibit #2, either Party may file a copy of this Agreement with the United States Securities & Exchange Commission; provided, however, that such Party shall use commercially reasonable efforts to obtain confidential treatment from
the United States Securities & Exchange Commission for all product pricing and technical information set forth in this Agreement. In addition, the Parties shall issue a joint press release as soon as practicable after execution of this
Agreement. 
  

	12.	No License: 

 This Agreement does not convey any license to
Buyer to use Seller’s name or any form of its corporate identification in any jurisdiction. Buyer is allowed a limited nonexclusive license to use certain technical data for the purpose of developing process technology. 
  

	13.	General Provisions: 

  

	 	a.	No Waiver: Waiver of any provision of this Agreement, in whole or in part, in any one instance shall not constitute a waiver of any other provision in the same instance, or
any waiver of the same provision in any other instance, but each provision shall continue in full force and effect with respect to any other then-existing or subsequent breach. 

  

 7 

 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  

	 	b.	Notice: Any notice required or permitted under this Agreement shall be given in writing to the Parties at their respective addresses as specified above, or at such other
address for a Party as that Party may specify by notice (i) by delivery in hand or, (ii) registered or certified mail, return receipt requested, or courier or some other form of expedited delivery service that provides for delivery to the
sender of a signed receipt. Notice so sent shall be effective upon receipt unless otherwise specified herein or in the notice. 

  

	 	c.	Arbitration of Disputes: All disputes arising out of or in connection with this Agreement that cannot be readily or amicably solved by the Parties shall be finally settled
pursuant to the Rules of Arbitration of the International Chamber of Commerce by three arbitrators appointed in accordance with said rules. The place of arbitration shall be the city of San Francisco USA and the arbitration shall be conducted in the
English language. 

  

	 	d.	Force Majeure: Neither Party to this Agreement shall be responsible to the other Party for delays or errors in its performance or other breach under this Agreement occurring
solely by reason of circumstances beyond its control, including acts of civil or military authority, national emergencies, fire, major mechanical breakdown, labor disputes, flood or catastrophe, acts of God, insurrection, war, riots, severe weather,
delays of suppliers, or failure of transportation, communication or power supply. 

  

	 	e.	Miscellaneous: This Agreement: (i) may be executed in any number of counterparts, each of which, when executed by both Parties to this Agreement shall be deemed to be an
original, and all of which counterparts together shall constitute one in the same instrument; (ii) shall be governed by and construed under the laws of The Commonwealth of Massachusetts applicable to contracts made, accepted, and performed
wholly in The Commonwealth, without application to the principle of conflict of laws; (iii) except and to the extent expressly provided for in Article 11, this Agreement constitutes the entire agreement between the Parties with respect to its
subject matter, superceding all prior oral and written (except as previously noted) written communications, proposals, negotiations, representations, understandings, courses of dealing, agreements, contracts, and the like between the Parties in such
respect; (iv) may be amended, modified, and any right under this Agreement may be waived in whole or in part, only by a writing signed by both Parties; (v) contains headings only for convenience, which headings do not form part, and shall
not be used in construction, of this Agreement; (vi) shall bind and inure to the benefit of the Parties and their respective legal representatives, successors and assigns, including, without limitation, to a Parties corporate parents or
affiliates, provides that no Party may delegate any of its obligations under this Agreement or assign this Agreement except to a related entity or successor by sale or merger, without prior written consent of the other party. This Agreement is in
the English language only which language shall be controlling in all aspects. 

  

	 	f.	 In the event either Party is in default for sixty (60) days in any obligation hereunder, and the other Party has given written notice specifying the claimed

  

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IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  

	 	 
particulars of such default, which shall continue for a period of thirty (30) days after the date of such notice, the party giving notice may thereupon
terminate this Agreement forthwith by giving the other Party ten (10) days written notice of termination. Buyer shall nevertheless be obligated to pay Seller all payments due pursuant to Seller’s costs to date.

  

	14.	United States Export Regulations: 

 Seller is subject to
the Export Regulations of the United States Department of Commerce and other regulatory agencies that regulate the export from the United States of certain technical data and information. Because of these regulations, the Parties to this Agreement
recognize that Seller can furnish such technical data to Buyer only on the condition that Buyer not re-export the technical data and/or information to any country to which Seller may not, without a validated export license, export such data
directly. Buyer acknowledges that Buyer is knowledgeable of such Export Regulations and agrees not to violate them or take any action or fail to take such action that would allow technical data and/or information or any product based upon them to be
shipped either directly or indirectly to any country not permitted by said regulations unless prior written authorization is obtained from the relevant agencies having jurisdiction over such shipment either directly or through Seller. 
  

	15.	Compliance with Laws Generally: 

 Both Parties agree that
they will diligently comply with all relevant laws, statutes, orders and administrative regulations of all relevant jurisdictions, at all relevant times. Each Party additionally agrees to indemnify and hold the other Party harmless from any
governmental action at law that results from the willful or negligent failure of the indemnifying Party to comply with any relevant law, statute, order or administrative regulation. The Parties hereby certify that they are, to the best of their
knowledge, compliant with all such laws, statutes, orders, and administrative regulations. 
  

	16.	Assignment: 

 This Agreement shall not be assignable by
either party hereto without the express prior written consent of the other party, except that it may be assigned without such consent to the successors to and assigns of substantially the entire assets and business of such party. No assignment
hereof shall be valid without the assumption in writing by such successors or assigns of all obligations under this Agreement. When duly assigned in accordance with the foregoing, this Agreement shall be binding upon and inure to the benefit of the
assignee. 
  

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IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 IN WITNESS WHEREOF, the Parties hereto have set their respective hand and seals signifying their concurrence and endorsement with and of the foregoing, in a number of
counterpart copies, each of which shall be deemed to be an original for all purposes and deemed effective and binding on the date at the head of this document. 
  

	
	 HOKU SCIENTIFIC

	
	 /s/ Dustin Shindo

	 By: Dustin Shindo

	
	 Title: Chairman, President and Chief Executive Officer

	
	 SPIRE CORPORATION

	
	 /s/ Stephen Hogan

	 By: Stephen Hogan

	
	 Title: Executive Vice President and General Manger

  

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IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 EXHIBIT #1 
 Letter of Credit (L/C)
Requirements 
  

	 	1.	Type: Irrevocable 

	 	2.	Applicant: Hoku Scientific 

	 	3.	Beneficiary: Spire Corporation, One Patriots Park, Bedford, MA, USA 

	 	4.	Expiration: Per Purchase and Sale Agreement 

	 	5.	Currency and Value: US Dollars; $1,307,280.00 

	 	6.	Drafts: At sight 

	 	7.	Partial Shipment: Allowed 

	 	8.	Trans-shipment: Allowed 

	 	9.	Ship from: Spire Corporation, Bedford, MA USA and Okazaki, Japan; from any USA/Japan port 

	 	10.	For shipment to: Place undisclosed yet 

	 	11.	Ex Works: Spire Corp, Bedford, MA USA/ Okazaki, Japan on or before May 31, 2007 

	 	12.	Description of Products: Per Purchase and Sales Agreement, Article 4 

	 	13.	Price Term: to be defined; intent as outlined in Purchase and Sale Agreement, Article 4 

	 	14.	Payment Terms: Per Purchase and Sale Agreement 

	 	15.	Documents Required: Commercial Invoice, Bill of Lading, Signed Acceptance Protocols for equipment only for L/C payment (US 1,106,160.00) 

	 	16.	Documents Required: Signed Completion of Installation and Training document for L/C payment (US$ 201,120.00) 

	 	17.	Period of performance: Presentation of documents within 21 days 

	 	18.	Advised Through: Citizens Bank, Medford, MA, USA 

	 	19.	Note: Spire must review and accept Hoku Scientific draft Letter of Credit prior to formal issue. 

  

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 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 ATTACHMENT A 
 DATA SHEETS

 [* 8 pages omitted] 
  

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 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 ATTACHMENT B 
 STANDARD LIMITED
WARRANTY FOR SPIRE EQUIPMENT 
 Limited Warranty: Spire warrants this equipment against defective components (excluding expendables) and workmanship and
warrants that the equipment will operate in accordance with current specifications sheets for that equipment. Spire’s warranty is limited to the repair of the equipment, including all necessary parts and labor, for a period of 365 days after
the completion of inspection Buyer’s site. It is understood that Customer’s personnel will be responsible for the replacement of parts that can reasonably and safely be replaced in under two hours. SPIRE WILL NOT BE RESPONSIBLE FOR LOST
PROFITS OR OTHER CONSEQUENTIAL DAMAGES ALLEGEDLY RESULTING FROM A FAILURE OR DEFECT IN THIS EQUIPMENT. This warranty is void where it is determined that the equipment in question was subject to accident, negligence, misuse, using the equipment for
purposes other than what it was designed for, or not maintaining the equipment in accordance with the specifications and instructions provided. The subject equipment is designed to operate on a nominal 24 hour per day period (exclusive of normal
maintenance time), as such, the nominal 24 hour per day operation (exclusive of normal maintenance time) is not considered abuse. Repairs and modifications are warranted only when performed by Spire personnel or customer personnel authorized by
Spire. This warranty is valid only to the original purchaser of the equipment and is not transferable. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHE WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY WARRANTY OF MECHANTABLITY OR FITNESS FOR A
PARTICULAR PURPOSE NOT SET FORTH IN THE SPECIFICATION SHEET(S) FOR THIS EQUIPMENT OR OTHER WRITING SIGNED BY AN AUTHORIZED SPIRE EMPLOYEE. Items not covered by this include lamps, test fixtures, vacuum cups filters and other expendable items.

  

 13 

 [*] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED
IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF
THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. 
  
 ATTACHMENT C 
 ACCEPTANCE PROTOCOLS

 [* 14 pages omitted] 
  

 14

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