Document:

<PAGE>

Confidential                                                        Exhibit 10.3
            (English Translation of the Original Contract in Chinese)

                            SILICON SUPPLY AGREEMENT

                                                Contract Number: SFBE-061111-LDK
                                      Place of Signing: 666 Linyang Road, Qidong
                                              Date of Signing: November 11, 2006

The Seller: Jiangxi LDK Solar Hi-Tech Co., Ltd.
The Buyer: Jiangsu Linyang Solarfun Co., Ltd.

Based on the status of the performance of Contracts 2005-LY1208, 2006-LY0528 and
LDK20060727ZLB, and taking into consideration of the needs of both parties in
the course of their development, the Seller and the Buyer hereby enter into this
Agreement on Amendments to Product Supply Contracts (this "Agreement") after
friendly negotiations.

Article 1.     Contract 2005-LY1208 shall be terminated with respect to the
               unperformed obligations thereunder. Such unperformed obligations
               consist of 1.38 million pieces of silicon wafers that shall be
               but have not been supplied to the Buyer by the Seller under such
               contract, and RMB37,521,120 that has been prepaid by the Buyer to
               the Seller under such contract for the purpose of such silicon
               wafers.

Article 2.     Contract 2006-LY0528 shall be terminated with respect to the
               unperformed obligations thereunder. Such unperformed obligations
               consist of 1.98 million pieces of silicon wafers that shall be
               but have not been supplied to the Buyer by the Seller under such
               contract, and RMB57,087,744 that has been prepaid by the Buyer to
               the Seller under such contract for the purpose of such silicon
               wafers.

Article 3.     Contract LDK20060727ZLB shall be terminated with respect to the
               unperformed obligations thereunder. Such unperformed obligations
               consist of 0.25 million pieces of multicrystalline silicon wafers
               (converted from the quantity of the unsupplied products) that
               shall be but have not been supplied to the Buyer by the Seller
               under such contract, and RMB12,648,500 that has been prepaid by
               the Buyer to the Seller under such contract for the purpose of
               such silicon wafers.

Article 4.     The Commissioned Processing Contract 2005-LY1209 shall be
               terminated. Notwithstanding such termination, the Seller shall,
               prior to November 25, 2006 perform all of its obligations to
               complete the processing of those products that has actually been
               commissioned to it by the Buyer.

Article 5.     The Cooperation Agreement dated December 16, 2005 by and between
               the parties hereto shall be terminated and any obligations
               thereunder the performance of which has been commenced shall
               continue to be performed in accordance with the original
               provisions thereof.

                                       1
<PAGE>

               The above five contracts shall hereinafter be referred to
               collectively as the "Terminated Contracts."

Article 6.     Any shortfall in the quantity of, and any unqualified or
               otherwise defective silicon wafers in, any batch of the silicon
               wafers that has been delivered as a result of the performance of
               any of the Terminated Contracts, shall be made up or replaced
               prior to December 25, 2006, as the case may be.

Article 7.     Any and all the deposits and advance payments paid for the
               purpose of those products that are left unsupplied under the
               Terminated Contracts shall be converted into the advance payments
               under this Agreement. The amount of such deposits and advance
               payments shall be determined as RMB98,952,900.80 for the time
               being. The parties hereto agree that the accurate amount of such
               advance payments so converted shall be subject to the final
               amount mutually confirmed by the accounting departments of the
               parties hereto subsequently. If such final amount is higher than
               RMB98,952,900.80, then the excess shall be repaid by the Seller
               to the Buyer or vice versa.

Article 8.     The parties hereto agree that beginning from December 2006 they
               shall perform this Agreement as follows:

               Agreed quantity, name , technical specifications, price and
               delivery schedule of the subject products:
<Table>
<Caption>
---------------------------------------------------------------------------------------------------------------------------------
  NAME OF SUBJECT              TECHNICAL SPECIFICATIONS                        QUANTITY         PRETAX UNIT     DELIVERY SCHEDULE
     PRODUCT                                                                                      PRICE
                                                                                                   (RMB
                                                                                                YUAN/PIECE)
---------------------------------------------------------------------------------------------------------------------------------
<S>                     <C>                                             <C>                     <C>             <C>
                        1. DIMENSIONS OF SUBJECT SILICON WAFERS:                                                For each month
                                                                                                                from December
                        1.1  Contour of subject silicon wafers:                                                 2006 to March
                        125x125+/-0.5mm                                                                         2007, 0.35 million
                                                                                                                pieces shall be
                        1.2  Thickness of subject silicon wafers:                                               delivered; for
                        240+/-20(u)m                                                                            each month from
                                                                                                                April to May in
                        1.3  Total thickness variation(TTV): 0.03mm                                             2007, 0.55 million
                                                                                                                pieces shall be
                        1.4. Vertical angle:  diagonal lines in the                                             delivered; for
                        internal square having equal length, within a                                           each month from
                        tolerance of +/-0.5mm                                                                   June to July in
                                                                                                                2007, 0.75
                        1.5 Flexibility: < or = 0.035mm                                                         million pieces
Multicrystalline                                                        4 million pieces        [*]             shall be delivered.
Silicon Wafer           2. TECHNICAL PARAMETERS                                                                 The silicon wafers
                                                                                                                to be supplied
                        2.1  Resistivity: 0.5 ~ 2 (ohm symbol).cm                                               hereunder shall
                                                                                                                be delivered by
                        2.2  Type of electric conduction: Type P                                                equal batches
                                                                                                                every ten days.
                        2.3  Minority carrier lifetime: > or = 2 (u)s

                        2.4  Oxygen concentration: <1x10(18)at/cm(3)

                        2.5  Carbon concentration: <5x10(17)at/cm(3)

                        3.  SURFACIAL QUALITY:

                        3.1  Notch: notch of crystal orientation on
                        any subject silicon wafer shall be no bigger
                        than 1x0.3mm, and there shall be no more than
                        two notches on any subject
---------------------------------------------------------------------------------------------------------------------------------
</Table>

  * Confidential Treatment Requested. The redacted material has been separately
               filed with the Securities and Exchange Commission.

                                       2
<PAGE>
<Table>
<Caption>
---------------------------------------------------------------------------------------------------------------------------------
  NAME OF SUBJECT              TECHNICAL SPECIFICATIONS                        QUANTITY         PRETAX UNIT     DELIVERY SCHEDULE
     PRODUCT                                                                                      PRICE
                                                                                                   (RMB
                                                                                                YUAN/PIECE)
---------------------------------------------------------------------------------------------------------------------------------
<S>                     <C>                                             <C>                     <C>             <C>
                        silicon wafer.

                        3.2  Broken edge: any subject silicon wafer
                        does not allow a broken edge bigger than
                        1x0.5 mm or more than two broken edges.

                        3.3  Any subject silicon wafer does not allow
                        any crack or conspicuous mark left by a
                        knife-cut or pit.

                        3.4. The surface of any subject silicon wafer
                        does not allow any stain or abnormal spot.

---------------------------------------------------------------------------------------------------------------------------------
                  Total Price                                           [*]
---------------------------------------------------------------------------------------------------------------------------------
</Table>

Article 9.     Quality requirements, technical standards and conditions on which
               and term during which the Seller shall be responsible for the
               quality of the subject silicon wafers: as set forth above in this
               Agreement.

Article 10.    Place and manner of delivery: The subject products shall be
               delivered to the warehouse of the Buyer.

Article 11.    Manner and cost of transportation: The subject products hereunder
               shall be delivered to the Buyer by means of road transportation
               at the Seller's expense.

Article 12.    Packaging standards and type of packaging materials: Suitable for
               long-distance transportation.

Article 13.    Standards and method of inspection and period for objection:
               After each delivery of the silicon wafers to the Buyer, the Buyer
               shall before warehousing, conduct full surface inspection of such
               silicon wafers pursuant to the specifications set forth herein.
               Where it has been discovered in the course of such inspection
               that there is any shortfall in the quantity of such batch of the
               silicon wafers so delivered either due to the inconsistency
               between the delivered quantity and the shipped quantity or the
               breakage of certain silicon wafers, such shortfall, after being
               confirmed by the parties hereto, shall be made up within ten
               days. In addition to that, any serious quality problem that may
               arise in the production process of the subject products shall be
               resolved through consultations between the parties hereto.

Article 14.    Terms of and period for payment: Price for the subject products
               to be supplied hereunder shall be paid as follows:

               (1) For each batch of the subject products to be delivered during
               the period from December 2006 to March 2007, 60% of the price for
               such batch of the subject products shall be deducted from the
               advance payments. In other words, RMB [*] shall be deducted each
               month if the delivery schedule set forth above is followed. The
               remaining 40% of the price shall be paid within 7 days as of the
               Buyer's acceptance of such batch of the subject products. In
               other words,

  * Confidential Treatment Requested. The redacted material has been separately
               filed with the Securities and Exchange Commission.

                                       3
<PAGE>

               RMB [*] shall be paid each month if the delivery schedule set
               forth above is followed.

               (2) For each batch of the subject products to be delivered during
               the period from April to May in 2007, 60% of the price for such
               batch of the subject products shall be deducted from the advance
               payments. In other words, RMB [*] shall be deducted each month if
               the delivery schedule set forth above is followed. The remaining
               40% of the price shall be paid within 7 days as of the Buyer's
               acceptance of such batch of the subject products. In other words,
               RMB [*] shall be paid each month if the delivery schedule set
               forth above is followed.

               (3) For each batch of the subject products to be delivered during
               the period from June to July in 2007, 60% of the price for such
               batch of the subject products shall be deducted from the advance
               payments and RMB[*] shall be deducted each month if the delivery
               schedule set forth above is followed. The remaining 40% of the
               price for each batch of the subject products delivered shall be
               paid within 7 days as of the Buyer's acceptance of such batch of
               the subject products and RMB[*] shall be paid each month if the
               delivery schedule set forth above is followed.

               Where the advance payment then left is not enough for any
               deduction, the Buyer shall make up the shortfall in a timely
               manner. For the Buyer's payment for each batch of the subject
               products actually delivered, the Seller shall issue to the Buyer
               a VAT invoice in a full amount.

Article 15.    Term of this Agreement. This Agreement shall come into effect
               upon execution and expire upon the full performance hereof.

Article 16.    In the event that either party hereto fails to perform any of its
               obligations hereunder, the non-breaching party may hold the
               breaching party liable for damages arising from such failure.
               Where the quantity of the subject products actually delivered
               during any month is less than 90% of the agreed quantity, the
               Seller shall pay liquidated damages to the Buyer each day which
               shall be equal to 5% of the total consideration of this
               Agreement. In such case, the Buyer shall have the right to
               terminate this Agreement at its sole discretion and request the
               Seller, within 6 days as of its receipt of the Buyer's notice for
               termination of this Agreement, to refund any and all the paid
               advance payments that are left by then and pay the interest
               accrued thereon at the interest rate of 7 0/00/month for the
               period when such advance payments have been occupied by the
               Seller. In addition to that, the Seller shall pay liquidated
               damages to the Buyer which shall be twice as much as 20% of the
               payment for the subject products that are left unsupplied in such
               month.

Article 17.    Any dispute in connection with the performance of this Agreement
               shall be settled through negotiations between the parties hereto.
               If no settlement can be reached

  * Confidential Treatment Requested. The redacted material has been separately
               filed with the Securities and Exchange Commission.

                                       4
<PAGE>

               through such negotiations, the parties hereto agree that the
               dispute shall be submitted to Shanghai Arbitration Commission for
               its arbitration.

Article 18.    Miscellaneous. The parties hereto agree that the unit price for
               the 0.35 million pieces of the 125x125 multicrystalline silicon
               wafers delivered during November 2006 shall be determined as RMB
               [*]/piece. Based on the premise that such agreement is performed,
               the unit price of the 0.3392 million pieces of the 125x125
               multicrystalline silicon wafers delivered during October 2006
               shall be determined as RMB [*]/piece. The unit price of any
               silicon wafers delivered during November 2006 other than the
               above 0.35 million pieces shall be subject to the unit price set
               forth herein above.

<Table>
<Caption>
--------------------------------------------------------------------------------
              The Seller                                 The Buyer
--------------------------------------------------------------------------------
<S>                                             <C>
Corporate name: Jiangxi LDK Solar Hi-Tech       Corporate name: Jiangsu Linyang
Co., Ltd. (company seal)                        Solarfun Co., Ltd.(company seal)

Address: Xinyu Economic and Technological       Address: 666 Linyang Road,
Development Zone, Jiangxi Province              Qidong, Jiangsu Province

Legal Representative: Zhu Liangbao (signature)  Legal Representative: Lu Yonghua
Authorized Agent:                               (signature)
                                                Authorized Agent:
                                                                  --------------
Dated: November 14, 2006

Tel: 0790-6860061
Fax: 0790-6860085                               Tel: 0513-3115763
                                                Fax: 0513-3115763

Bank of Deposit:
                 -----------------              Bank of Deposit: Bank of China,
Account No.:                                    Qidong Branch, Business
             -----------------                  Department
Tax No.:                                        Account No.: 647032159808091001
         -----------------                      Tax No.: 320681765140726
--------------------------------------------------------------------------------
</Table>

  * Confidential Treatment Requested. The redacted material has been separately
               filed with the Securities and Exchange Commission.

                                       5<PAGE>
                                                                    Exhibit 10.4

            (English Translation of the Original Contract in Chinese)

                      SILICON SUPPLY COOPERATION AGREEMENT

     Whereas, Jiangsu Linyang Solarfun Co., Ltd. (hereinafter referred to as
"Solarfun") has been striving to grow into an internationally recognized PV cell
manufacturer; and

     Whereas, Solarfun and Jiangxi LDK Solar Hi-Tech Co., Ltd. (hereinafter
referred to as "LDK") desire to establish a strategic partnership between them
to achieve a win-win result and mutual development on the principle of equality
and good faith and following the guideline of "Open, Timely and Dynamic
Adjustment".

     NOW, THEREFORE, after friendly negotiations, Solarfun and LDK hereby reach
the following agreement for the purchase and sale of multicrystalline silicon
wafers:

1.   In the case of shortage of multicrystalline silicon materials, LDK shall
     supply multicrystalline silicon wafers it manufactures to Solarfun to the
     maximum extent possible. While in the case of relative excess of the
     materials, Solarfun shall, on a priority basis, purchase and consume the
     multicrystalline silicon wafers manufactured by LDK at the price then
     prevailing at the international market.

2.   Based on the result of the cooperation between them during 2006 and in view
     of the development plan of LDK, Solarfun and LDK have agreed that from July
     1, 2007 to June 30, 2008 LDK shall supply Solarfun with the
     multicrystalline silicon wafers necessary for the production of 16,200,000
     pieces of multicrystalline silicon PV cells, including 15,000,000 pieces of
     multicrystalline silicon wafers at the specifications of 156x156, and
     1,200,000 pieces of multicrystalline silicon wafers at the specifications
     of 125x125. Such products shall be delivered to Solarfun by equal
     installments on a monthly-basis commencing from July 1, 2007.

3.   The actual price and thickness of the silicon wafers to be supplied
     hereunder shall be determined subject to further negotiations based on the
     actual market conditions and technology development at the relevant time.

4.   The specific terms for the cooperation contemplated hereunder shall be
     executed by the parties hereto subsequently as and when appropriate.

5.   This Agreement shall be executed in two (2) originals, with each Solarfun
     and LDK to hold one (1). This Agreement shall come into effect upon being
     affixed with the signature of the authorized signatory or the company seal
     of each Solarfun and LDK hereto.

                          [signature on the next page]

                                       1
<PAGE>

LDK:            JIANGXI LDK SOLAR HI-TECH CO., LTD. (affixed with LDK's company
                seal)

Signed by:  Zhu Liangbao

Dated:  November 14, 2006

SOLARFUN:       JIANGSU LINYANG SOLARFUN CO., LTD. (affixed with Solarfun's
                company seal)

Signed by:  Lu Yonghua (signature)

Dated:  November 14, 2006

                                       2

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00114-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00114-of-00352.parquet"}]]