Document:

ex4-11.htm

    
      
        	*
      Confidential treatment has been requested for certain portions omitted
      from this exhibit pursuant to Rule 24b-2 under the Securities Exchange Act
      of 1934, as amended. Confidential portions of this Exhibit have been
      separately filed with the Securities and Exchange
      Commission.

      

      
        

      

      

      English
translation for reference purpose only

      Exhibit
4.11

      
        Supplementary
Agreement IV

        Ref. no.:
JA4DAB09010

        Dated
on:2009-01-23

         

        Signed
at:Zhabei
District, Shanghai

         

        
          	
                   
      

                	
                  Related
      Contract No.: YGX0708100001&
      YGX0711150001-122

                

        

        

        
          
            
              
                	
                        PARTY
      A

                      	
                        Zhejiang
      Yuhui Solar Energy Source Co., Ltd.

                      
	 	 
	
                        TEL

                      	
                         0086-573-4773130

                      	
                        FAX

                      	
                         0086-573-4773063

                      
	
                        ADD.

                      	
                        No.
      8 Baoqun Road, Yao Zhuang Town Industrial Park, Jiashan,
      Zhejiang

                      
	 	 
	
                        PARTY
      B

                      	
                        JingAo
      Solar Co., Ltd.

                      
	 	 
	
                        TEL

                      	
                        0086-21-60955851

                      	
                        FAX

                      	
                        0086-21-60955850

                      
	
                        ADD.

                      	
                        No.
      3 Jiangchang Rd., Zhabei District, Shanghai,
  China

                      

              

            

          

        

        

        Whereas
Party A and Party B have entered into Sale and Purchase Contracts with contract
No. as YGX0708100001 and YGX0711150001-122, both parties agree to enter into a
supplement agreement as follows:

        

        1.          
Content

        

        1.1         After
negotiation, Party A will supply Party B with *** pieces of 156*156
multi-crystalline silicon wafers in January 2009, the unit price of which is
***/piece.  RMB ** will be deducted from the long-term prepayment for each
piece.  For technical specifications, please refer to Annex 1.

        

        1.2         Party
A is required to supply the products immediately after execution of this
Agreement.  Party B will pay the price for such products to Party A *** day
before delivery.

        

        1.3         Both
parties will discuss and agree to technical specifications and delivery issues
for February under Contract YGX0708100001 and YGX0711150001-122 on February 15,
2009.

        

        2.          
 This Agreement forms an integral part of Contract YGX0708100001 and
YGX0711150001-122.  Both parties will agree otherwise to matters not
provided for in this Agreement.

        

        3.        
  This Agreement is made in two counterparts, each of which shall be
held by one party. This Agreement becomes effective upon signature and affixture
of seal by the parties hereto.  Facsimile copy shall have the same legal
effect.

        

        
           

          
            
              	
                      No.
      36, Jiang Change San Rd., Zhabei, Shanghai China 200436

                    
	
                      TEL:
      (86 21)60955859

                    	
                      FAX(86
      21)60955855

                    	
                      WEBSITE:
      www.jasolar.com

                    

            

          

           

        
          
            
            

          

          
            
            

            
              

            

          

          
            
            

          

        

        
          
            	*
      Confidential treatment has been requested for certain portions omitted
      from this exhibit pursuant to Rule 24b-2 under the Securities Exchange Act
      of 1934, as amended. Confidential portions of this Exhibit have been
      separately filed with the Securities and Exchange
      Commission.

          

          
            

          

         

        
          
            
              
                
                  	
                          SELLER

                        	
                          Zhejiang
      Yuhui Solar Energy Source Co., Ltd.

                        	
                          BUYER

                        	
                          JingAo
      Solar Co., Ltd.

                        
	 	 	 	 
	
                          Sign
      & Seal

                        	 	
                          Sign
      & Seal

                        	 
      
	 	 	 	 
	
                          Date

                        	 
      	
                          Date

                        	 
      
	 	 	 	 
	
                          Bank
      info

                           

                        	
                          Industry
      and Commerce Bank, Jiashan County

                          1204070009242025955

                        	
                          Bank
      info

                           

                        	
                          China
      Bank, Ningjin Sub-branch (Hebei, China)

                          15054208091001

                        
	 	 	 	 
	
                          VAT

                        	 
      	
                          VAT

                        	
                          130528774419294

                        

                

              

            

          

        

        

         

        Annex 1
Technical Specification

        
          
            	
                    1.

                  	
                    Conductance
      Type:P

                  
	 	 

          

        

        
          
            	
                    2.

                  	
                    Dopant:B

                  
	 	 

          

        

        
          
            	
                    3.

                  	
                    Dimensions:156*156±0.4mm

                  
	 	 

          

        

        
          
            	
                    4.

                  	
                    Diameter:219.5±0.4mm

                  
	 	 

          

        

        
          
            	
                    5.

                  	
                    Thickness:190±10 um,
      center≥185um

                  
	 	 

          

        

        
          
            	
                    6.

                  	
                    Resistivity:0.5-2
      Ω.cm

                  
	 	 

          

        

        
          
            	
                    7.

                  	
                    Life
      time:≥2μs

                  
	 	 

          

        

        
          
            	
                    8.

                  	
                    Oxygen:≤1*1018
      atoms/cm3

                  
	 	 

          

        

        
          
            	
                    9.

                  	
                    Carbon:≤5*1017
      atoms/cm3

                  
	 	 

          

        

        
          
            	
                    10.

                  	
                    Camber:≤20
      μm

                  
	 	 

          

        

        
          
            	
                    11.

                  	
                    TTV:≤20μm

                  
	 	 

          

        

        
          
            	
                    12.

                  	
                    Sawmark:≤15μm

                  
	 	 

          

        

        
          
            	
                    13.

                  	
                    Edge
      defect:Edge
      defect width ≤ 0.4mm,extension less than 0.8mm, with total quantity ≤
      2,distance≥30mm

                  
	 	 

          

        

        
          
            	
                    14.

                  	
                    Surface
      Condition: No crack, no obvious sawmark, without obvious tactility, no
      pit,no V-type
      gap, no hole; no glue left; surface cleaned, no abnormal spot, no
      stain

                  
	 	 

          

        

        
          
            	
                    15.

                  	
                    Gap:Width*depth
      of gap ≤1*0.3mm2, no V shape gap, with total quantity
≤1

                  
	 	 

          

        

        
          
            	
                    16.

                  	
                    Tiny
      Luminance Edge: Length ≤1/2 of wafer dimension, width ≤1/3 of wafer
      thickness Grain Size:≤10/cm2

                  
	 	 

          

        

      

       

      
        
          	
                  No.
      36, Jiang Change San Rd., Zhabei, Shanghai China 200436

                
	
                  TEL:
      (86 21)60955859

                	
                  FAX(86
      21)60955855

                	
                  WEBSITE:
      www.jasolar.comex4-12.htm

    
      
        	*
      Confidential treatment has been requested for certain portions omitted
      from this exhibit pursuant to Rule 24b-2 under the Securities Exchange Act
      of 1934, as amended. Confidential portions of this Exhibit have been
      separately filed with the Securities and Exchange
      Commission.

      

      
        
          

        

      

      

      English
translation for reference purpose only

      Exhibit
4.12

       

      
        Supplementary
Agreement V

        Ref. no.:
JA4DAB09080

        Dated
on:2009-03-31

         

        Signed
at:Zhabei
District, Shanghai

         

        
          	
                   
      

                	
                  Related
      Contract No.: YGX0708100001&
      YGX0711150001-122

                

        

        

        
          
            
              
                	
                        PARTY
      A

                      	
                        Zhejiang
      Yuhui Solar Energy Source Co., Ltd.

                      
	 	 
	
                        TEL

                      	
                         0086-573-4773130

                      	
                        FAX

                      	
                         0086-573-4773063

                      
	
                        ADD.

                      	
                        No.
      8 Baoqun Road, Yao Zhuang Town Industrial Park, Jiashan,
      Zhejiang

                      
	 	 
	
                        PARTY
      B

                      	
                        JingAo
      Solar Co., Ltd.

                      
	 	 
	
                        TEL

                      	
                        0086-21-60955851

                      	
                        FAX

                      	
                        0086-21-60955850

                      
	
                        ADD.

                      	
                        No.
      36 Jiangchang San Rd., Zhabei District, Shanghai,
  China

                      

              

            

          

        

        

        Party A
and Party B have entered into Sale and Purchase Contracts with contract No. as
YGX0708100001 and YGX0711150001-122 (hereinafter refereed to as “Original
Long-term Contract”),.  After friendly negotiations, both parties agree to
enter into a supplement agreement as follows:

        

        1.          
Content

        

        1.1         After
friendly negotiation, both parties agree to change mono-crystalline solar cells
to be delivered in February and March under the Original Long-term Contract into
156*156 multi-crystalline silicon wafers as follows, the total number to be
delivered is *** pieces and the unit price is ***/piece, and RMB *** will be
deducted from the long-term prepayment for each piece.  For technical
specifications, please refer to Annex 1.

        

        1.2         After
execution of this Agreement, Party A will supply to Party B total *** pieces of
156*156 multicrystalline silicon wafers on March 31, 2009.  Party B will
make ***% of the payment to Party A within *** working days after receiving
products from Party A, and the remaining ***% will be paid to Party A *** days
after receiving the products from Party A, provided that Party B receives all
VAT invoice under this Agreement.

        

        1.3         Quality
warranty period: *** days.

        

        2.          
This Agreement forms an integral part of Contract YGX0708100001 and
YGX0711150001-122.  Both parties will agree otherwise to matters not
provided for in this Agreement.

        

        3.       
   This Agreement is made in two counterparts, each of which
shall be held by one party. This Agreement becomes effective upon signature and
affixture of seal by the parties hereto.  Facsimile copy shall have the
same legal effect.

        

        
           

          
             

          

        
          
            
            

          

          
            
            

            
              

            

          

          
            
            

          

        

        
          	*
      Confidential treatment has been requested for certain portions omitted
      from this exhibit pursuant to Rule 24b-2 under the Securities Exchange Act
      of 1934, as amended. Confidential portions of this Exhibit have been
      separately filed with the Securities and Exchange
      Commission.

          
            
              

            

          

        

        
          
            
              
                
                  	
                          SELLER

                        	
                          Zhejiang
      Yuhui Solar Energy Source Co., Ltd.

                        	
                          BUYER

                        	
                          JingAo
      Solar Co., Ltd.

                        
	 	 	 	 
	
                          Sign
      & Seal

                        	 
      	
                          Sign
      & Seal

                        	 
      
	 	 	 	 
	
                          Date

                        	 
      	
                          Date

                        	 
      
	 	 	 	 
	
                          Bank
      info

                           

                        	
                          Industry
      and Commerce Bank, Jiashan County

                          1204070009242025955

                        	
                          Bank
      info

                           

                        	
                          China
      Bank, Ningjin Sub-branch (Hebei, China)

                          15054208091001

                        
	 	 	 	 
	
                          VAT

                        	 
      	
                          VAT

                        	
                          130528774419294

                        

                

              

            

          

        

        

        

        

        

        Annex 1
Technical Specification

        
          
            	
                    1.

                  	
                    Conductance
      Type:P

                  
	 	 

          

        

        
          
            	
                    2.

                  	
                    Dopant: B

                  
	 	 

          

        

        
          
            	
                    3.

                  	
                    Dimensions:156*156±0.4mm

                  
	 	 

          

        

        
          
            	
                    4.

                  	
                    Diameter(bevel 0.5-2mm in
      45°):219.2±0.5mm, 0.5-2mm
      in 45°

                  
	 	 

          

        

        
          
            	
                    5.

                  	
                    Thickness:200±10um,
      center≥190um

                  
	 	 

          

        

        
          
            	
                    6.

                  	
                    Resistivity:0.8-3 Ω.cm

                  
	 	 

          

        

        
          
            	
                    7.

                  	
                    Life
      time after passivation:≥2μs

                  
	 	 

          

        

        
          
            	
                    8.

                  	
                    Oxygen:≤1*1018
      atoms/cm3

                  
	 	 

          

        

        
          
            	
                    9.

                  	
                    Carbon:≤8*1017
      atoms/cm3

                  
	 	 

          

        

        
          
            	
                    10.

                  	
                    Camber:≤30
      μm

                  
	 	 

          

        

        
          
            	
                    11.

                  	
                    TTV:≤25μm

                  
	 	 

          

        

        
          
            	
                    12.

                  	
                    Sawmark:≤15μm

                  
	 	 

          

        

        
          
            	
                    13.

                  	
                    Edge
      defect:Edge
      defect width ≤
      0.4mm,extension less than 0.8mm, with total quantity ≤ 2,distance≥30mm

                  
	 	 

          

        

        
          
            	
                    14.

                  	
                    Surface
      Condition: No crack, no obvious sawmark, without obvious tactility,
      no pit,no
      V-type gap, no hole; no glue left; surface cleaned, no abnormal spot, no
      stain

                  
	 	 

          

        

        
          
            	
                    15.

                  	
                    Gap:
      Width*depth of gap ≤1*0.3mm2,
      no V shape gap, with total quantity ≤1

                  
	 	 

          

        

        
          
            	
                    16.

                  	
                    Tiny
      Luminance Edge: Length
      ≤1/2 of wafer dimension, width ≤1/3 of wafer thickness

                  
	 	 

          

        

        
          	
                  17.

                	
                  Grain
      Size:≤10 /cm2

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