Document:

<PAGE>
                                                                   Exhibit 10.15

                       SHARE ISSUE AND TRANSFER AGREEMENT

THIS AGREEMENT is made and entered into on this 12th day of June, 2006 by and
between:-

(1)  Yonghua Solar Power Investment Holding Ltd ("YONGHUA");

(2)  Yongliang Solar Power Investment Holding Ltd ("YONGLIANG");

(3)  Yongqiang Solar Power Investment Holding Ltd ("YONGQIANG");

(4)  WHF Investment Co., Ltd ("WHF");

(5)  Yongfa Solar Power Investment Holding Ltd ("YONGFA");

(6)  YongGuan Solar Power Investment Holding Ltd ("YONGGUAN");

(7)  Forever-brightness Investments Limited ("FOREVER");

(8)  YongXing Solar Power Investment Holding Ltd ("YONGXING");

(9)  Linyang Solar Power Investment Holding Ltd ("LINYANG"), together with all
of the parties listed in (1) to (8) inclusive above, having their registered
office at PO Box 173, Kingston Chambers, Road Town, Tortola, British Virgin
Islands; and

(10) Solarfun Power Holdings Co., Ltd. an exempted limited liability company
incorporated and existing under the laws of the Cayman Islands, having its
registered office at M&C Corporate Services Limited, Ugland House, P.O. Box 309,
George Town, Grand Cayman, Cayman Islands ("SOLARFUN").

                                   WITNESSETH:

WHEREAS as at the date hereof, Linyang has issued 100 fully paid and
non-assessable voting shares, each with par value of US$0.001 (the "LINYANG
SHARES") to the persons ("CURRENT LINYANG Shareholders") and in the amounts set
forth in Schedule 1-1;

WHEREAS all of the Current Linyang Shareholders desire to sell all of their
Linyang Shares as set forth herein to Solarfun, in exchange for voting shares to
be issued by Solarfun; and

WHEREAS all of the issued and unissued shares in the capital of Solarfun have
been subdivided into shares of US$0.0001 par value each, by ordinary resolution
of the sole subscriber dated 9 June, 2006

NOW, THEREFORE, in consideration of the foregoing and the mutual covenants and
promises hereinafter contained, the parties hereto, intending to be legally
bound, agree as follows:

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ARTICLE 1 (DEFINITIONS)

"ENCUMBRANCE"

         means (a) any mortgage, charge (whether fixed or floating), pledge,
         lien, hypothecation, assignment, deed of trust, title retention,
         security interest or other encumbrance of any kind securing, or
         conferring any priority of payment in respect of, any obligation of any
         Person, including any right granted by a transaction which, in legal
         terms, is not the granting of security but which has an economic or
         financial effect similar to the granting of security under applicable
         Law, (ii) any lease, sub-lease, occupancy agreement, easement or
         covenant granting a right of use or occupancy to any Person, (iii) any
         proxy, power of attorney, voting trust agreement, interest, option,
         right of first offer, negotiation or refusal or Transfer restriction in
         favor of any Person and (iv) any adverse claim as to title, possession
         or use.

ARTICLE 2 (SALE AND TRANSFER OF LINYANG SHARES)

2.1      On the date of this Agreement Yonghua Solar Power Investment Holding
         Ltd, Yongliang Solar Power Investment Holding Ltd, Yongqiang Solar
         Power Investment Holding Ltd, WHF Investment Co., Ltd, Yongfa Solar
         Power Investment Holding Ltd, YongGuan Solar Power Investment Holding
         Ltd, Forever-brightness Investments Limited and YongXing Solar Power
         Investment Holding Ltd each hereby sells and transfers full legal and
         beneficial title to Solarfun to such number of Linyang Shares
         registered in their names in Linyang's register of Members, free of all
         Encumbrances, as is set forth below:-

         (i)    Yonghua Solar Power Investment Holding Ltd (77 Linyang Shares);
         (ii)   Yongliang Solar Power Investment Holding Ltd (1.5 Linyang
                Shares);
         (iii)  Yongqiang Solar Power Investment Holding Ltd (1.5 Linyang
                Shares);
         (iv)   WHF Investment Co., Ltd (12.5 Linyang Shares);
         (v)    Yongfa Solar Power Investment Holding Ltd (5 Linyang Shares);
         (vi)   YongGuan Solar Power Investment Holding Ltd (0.5 Linyang
                Shares);
         (vii)  Forever-brightness Investments Limited (1 Linyang Share); and
         (viii) YongXing Solar Power Investment Holding Ltd (1 Linyang Share).

2.2      On the date of this Agreement, Solarfun hereby agrees to issue the
         following voting shares (each with a US$0.0001 par value) in its share
         capital as fully-paid and non-assessable, such shares to be issued
         forthwith upon the execution of this Agreement (collectively, "SOLARFUN
         SHARES"):

         (i)    77,269,490 to Yonghua Solar Power Investment Holding;
         (ii)   1,505,250 to Yongliang Solar Power Investment Holding Ltd;
         (iii)  1,505,250 to Yongqiang Solar Power Investment Holding Ltd;
         (iv)   12,543,750 to WHF Investment Co., Ltd;
         (v)    5,017,500 to Yongfa Solar Power Investment Holding Ltd;
         (vi)   501,750 to YongGuan Solar Power Investment Holding Ltd;
         (vii)  1,003,500 to Forever-brightness Investments Limited; and
         (viii) 1,003,500 to YongXing Solar Power Investment Holding Ltd.

                                       2
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2.3      Solarfun undertakes to update its register of members to reflect the
         issue of Solarfun Shares.

ARTICLE 3 (CONSIDERATION)

3.1      Each of the parties hereby agrees that the issue price of the Solarfun
         Shares shall be paid in full by the transfer to Solarfun of the Linyang
         Shares in accordance with the terms hereof and that the issue of the
         Solarfun Shares shall occur forthwith after the transfer of title to
         the Linyang Shares in accordance with the terms hereof.

3.4      Each of the parties hereby agrees that the payment obligations in this
         Agreement shall be several and not joint.

ARTICLE 4 (EXPENSES)

Each party shall be responsible for any and all expenses incurred by such party
in connection with the execution, delivery and performance of this Agreement.

ARTICLE 5 (NON-ASSIGNABILITY)

No party may assign, pledge, transfer or otherwise dispose of any right or
delegate its duty under this Agreement without prior written consents of all the
other parties hereto.

ARTICLE 6 (ENTIRE AGREEMENT)

This Agreement constitutes the entire and only agreement between the parties
hereto with respect to the sale and purchase of the Linyang Shares and
supersedes, cancels and annuls all prior or contemporaneous agreements,
understandings, negotiations or communications between the parties hereto
relating to the subject matter hereof.

ARTICLE 7 (GOVERNING LAW AND JURISDICTION)

This Agreement shall in all respects be governed by, and construed in accordance
with, the laws of the Cayman Islands.

ARTICLE 8 (AMENDMENT)

This Agreement and its terms may not be amended, supplemented, waived or
modified orally, but only by an instrument in writing signed by all the parties
hereto.

ARTICLE 9 (COUNTERPARTS)

This Agreement may be executed in any number of counterparts, and this has the
same effect as if the signatures on the counterparts were on a single copy of
this Agreement. This Agreement shall take effect only when all parties have
executed and delivered it.

                                       3
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ARTICLE 10 (HEADINGS)

The headings of this Agreement are for convenience of reference only and shall
not define, modify or otherwise affect any of the provisions hereof.

                                       4
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IN WITNESS WHEREOF, the parties hereto have caused their duly authorized
representatives to execute this Agreement the day and year first above written.

                                 YONGHUA SOLAR POWER INVESTMENT HOLDING LTD

                           By:   /s/ Yonghua Lu
                                 -----------------------------------------------
                           Name:
                                 a duly authorised signatory

                                 YONGLIANG SOLAR POWER INVESTMENT HOLDING LTD

                           By:   /s/ Yongliang Gu
                                 -----------------------------------------------
                           Name:
                                 a duly authorised signatory

                                 YONGQIANG SOLAR POWER INVESTMENT HOLDING LTD

                           By:   /s/ Rongqiang Cui
                                 -----------------------------------------------
                           Name:
                                 a duly authorised signatory

                                 WHF INVESTMENT CO., LTD

                           By:   /s/ Hanfei Wang
                                 -----------------------------------------------
                           Name:
                                 a duly authorised signatory

                                 YONGFA SOLAR POWER INVESTMENT HOLDING LTD

                           By:   /s/ Haijuan Yu
                                 -----------------------------------------------
                           Name:
                                 a duly authorised signatory

                                 YONGGUAN SOLAR POWER INVESTMENT HOLDING LTD

                           By:   /s/ Yuting Wang
                                 -----------------------------------------------
                           Name:
                                 a duly authorised signatory

                                 FOREVER-BRIGHTNESS INVESTMENTS LIMITED

                           By:   /s/ Min Cao
                                 -----------------------------------------------
                           Name:
                                 a duly authorised signatory

                                       5
<PAGE>

                                 YONGXING SOLAR POWER INVESTMENT HOLDING LTD

                           By:   /s/ Xingxue Tong
                                 -----------------------------------------------
                           Name:
                                 a duly authorised signatory

                                 LINYANG SOLAR POWER INVESTMENT HOLDING LTD

                           By:   /s/ Yonghua Lu
                                 -----------------------------------------------
                           Name:
                                 a duly authorised signatory

                                 SOLARFUN SOLAR POWER HOLDINGS CO., LTD

                           By:   /s/ Yonghua Lu
                                 -----------------------------------------------
                           Name:
                                 a duly authorised signatory

                                       6<PAGE>
                                                                   Exhibit 10.16

                             DEED OF SHARE TRANSFER

THIS AGREEMENT is SUPPLEMENTAL TO THE SHARE TRANSFER AGREEMENT DATED 9 JUNE 2006
between the parties hereto and is made and entered into as a deed on this 18 day
of August 2006, with effect as of 15 July 2006, and between:-

(1)  Yonghua Solar Power Investment Holding Ltd ("YONGHUA");

(2)  Yongliang Solar Power Investment Holding Ltd ("YONGLIANG");

(3)  Yongqiang Solar Power Investment Holding Ltd ("YONGQIANG");

(4)  WHF Investment Co., Ltd ("WHF");

(5)  Yongfa Solar Power Investment Holding Ltd ("YONGFA");

(6)  YongGuan Solar Power Investment Holding Ltd ("YONGGUAN");

(7)  Forever-brightness Investments Limited ("FOREVER");

(8)  YongXing Solar Power Investment Holding Ltd ("YONGXING");

(9)  Linyang Solar Power Investment Holding Ltd ("LINYANG"), together with all
     of the parties listed in (1) to (8) inclusive above, having their
     registered office at PO Box 173, Kingston Chambers, Road Town, Tortola,
     British Virgin Islands; and

(10) Sze Hiu Shun, an individual identified by Hong Kong passport number
     H01298365 and residing at FLAT 6A, Po Yang Mansion, TaiKoo Shing, Hong
     Kong.

WITNESSETH:-

WHEREAS on 9 June 2006, the parties hereto entered into a share transfer
agreement in respect of the transfer of shares in Linyang then held by Sze Hiu
Shun, Yongqiang and Yongliang respectively (the "SHARE TRANSFER AGREEMENT"), a
signed copy of which is attached to this Agreement as Schedule 1;

WHEREAS Article 3 of the Share Transfer Agreement has stipulated the
consideration for the share transfers contemplated thereunder, which were
calculated with reference to the consideration paid by Linyang in respect of its
acquisition of Jiangsu Linyang Solar Power Co., Ltd.;

WHEREAS upon renegotiation between the parties, the parties hereto entered into
a supplemental share transfer agreement in the Chinese language on 15 July 2006
(the "CHINESE AGREEMENT") to amend and supplement the Share Transfer Agreement
for the sole purpose of adjusting the consideration paid for the share transfers
that took place pursuant to the Share Transfer Agreement (by valuing Linyang at
RMB4.032 billion based on the 2006 net profit of

<PAGE>
RMB1.2 billion, using a profit earning ratio of 3.36 and a payment exchange rate
of 1:8). A signed copy of the Chinese Agreement is attached to this Agreement as
Schedule 2;

WHEREAS subsequent to the execution of the Chinese Agreement, Linyang's Cayman
Islands Counsel has advised that the Chinese Agreement, if governed by Cayman
Islands law, may be void for want of consideration;

NOW, THEREFORE, by executing and delivering this Agreement as a deed governed by
the laws of the Cayman Islands, the parties hereto wish to record and confirm
the content of the Chinese Agreement as follows:

ARTICLE 1 CONSIDERATION

Each party hereto agrees to adjust the consideration payable for the share
transfers set forth in Article 3 of the Share Transfer Agreement. The adjusted
consideration for each such share transfer is as set forth in the Chinese
Agreement and is based upon the new valuation of Linyang referred to in the
Chinese Agreement and the percentage of shareholding and is as follows:

     (i)    in consideration of 24.5 Linyang shares, Yonghua shall pay to
            Sze Hiu Shun RMB98,800,000 for the shares transferred in accordance
            with the Share Transfer Agreement and this Agreement;

     (ii)   in consideration of 12.5 Linyang shares, WHF shall pay to Sze Hiu
            Shun RMB50,400,000 for the shares transferred in accordance with the
            Share Transfer Agreement and this Agreement;

     (iii)  in consideration of 5.0 Linyang shares, Yongfa shall pay to Sze Hiu
            Shun RMB20,160,000 for the shares transferred in accordance with the
            Share Transfer Agreement and this Agreement;

     (iv)   in consideration of 0.5 Linyang share, YongGuan shall pay to Sze Hiu
            Shun RMB2,016,000 for the shares transferred in accordance with the
            Share Transfer Agreement and this Agreement;

     (v)    in consideration of 1.0 Linyang shares, Forever shall pay to
            Yongqiang RMB4,032,000 for the shares transferred in accordance with
            the Share Transfer Agreement and this Agreement;

     (vi)   in consideration of 0.5 Linyang shares, YongXing shall pay to
            Yongqiang RMB2,016,000 for the shares transferred in accordance with
            the Share Transfer Agreement and this Agreement;

     (vii)  in consideration of 1.0 Linyang shares, Yongqiang shall pay to
            Yongliang RMB4,032,000 for the shares transferred in accordance with
            the Share Transfer Agreement and this Agreement; and

                                       2
<PAGE>
     (viii) in consideration of 0.5 Linyang shares, YongXing shall pay to
            Yongliang RMB2,016,000 for the shares transferred in accordance with
            the Share Transfer Agreement and this Agreement.

ARTICLE 2 PAYMENT

[The adjusted consideration described in Article 1, to the extent not already
received by the relevant transferors, must be paid and received by the relevant
transferors within 30 days from the date of execution of this Agreement.]

ARTICLE 3 MISCELLANEOUS

3.1  Save as described herein, all other provisions in the Share Transfer
     Agreement shall continue to apply.

3.2  For the avoidance of doubt, this Agreement shall in all respects be
     governed by, and construed in accordance with, the laws of the Cayman
     Islands.

                                       3
<PAGE>
IN WITNESS WHEREOF, the parties hereto have caused their duly authorized
representatives to execute and deliver this Agreement as a deed on the day and
year first above written, effective as of 15 July 2006.

EXECUTED AS A DEED

For and on behalf of                   )
YONGHUA SOLAR POWER                    )
 INVESTMENT HOLDING LTD                )
                                       )     /s/ Yonghua Lu
                                       )     -----------------------------------
                                       )         Yonghua Lu
                                       )         Authorised Signatory
                                       )
in the presence of:

/s/ Xiangchun Wang
------------------------------------
Witness

For and on behalf of                   )
YONGLIANG SOLAR POWER                  )
 INVESTMENT HOLDING LTD                )
                                       )     /s/ Yongliang Gu
                                       )     -----------------------------------
                                       )         Yongliang Gu
                                       )         Authorised Signatory
                                       )
in the presence of:

/s/ Xiangchun Wang
------------------------------------
Witness

                                       4

<PAGE>
For and on behalf of                   )
YONGQIANG SOLAR POWER                  )
 INVESTMENT HOLDING LTD                )
                                       )     /s/ Rongqiang Cui
                                       )     -----------------------------------
                                       )         Rongqiang
                                       )         Authorised Signatory
                                       )
in the presence of:

/s/ Xiangchun Wang
------------------------------------
Witness

For and on behalf of                   )
WHF INVESTMENT CO., LTD                )
                                       )
                                       )     /s/ Hanfei Wang
                                       )     -----------------------------------
                                       )         Hanfei Wang
                                       )         Authorised Signatory
                                       )
in the presence of:

/s/ Xiangchun Wang
------------------------------------
Witness

For and on behalf of                   )
YONGFA SOLAR POWER                     )
 INVESTMENT HOLDING LTD                )
                                       )     /s/ Haijuan Yu
                                       )     -----------------------------------
                                       )         Haijuan Yu
                                       )         Authorised Signatory
                                       )
in the presence of:

/s/ Xiangchun Wang
------------------------------------
Witness

                                       5
<PAGE>
For and on behalf of                   )
YONGGUAN SOLAR POWER                   )
 INVESTMENT HOLDING LTD                )
                                       )     /s/ Yuting Wang
                                       )     -----------------------------------
                                       )         Yuting Wang
                                       )         Authorised Signatory
                                       )
in the presence of:

/s/ Xiangchun Wang
------------------------------------
Witness

For and on behalf of                   )
FOREVER-BRIGHTNESS INVESTMENT LIMITED  )
                                       )
                                       )     /s/ Min Cao
                                       )     -----------------------------------
                                       )         Min Cao
                                       )         Authorised Signatory
                                       )

in the presence of:

/s/ Xiangchun Wang
------------------------------------
Witness

For and on behalf of                   )
YONGXING SOLAR POWER                   )
 INVESTMENT HOLDING LTD                )
                                       )     /s/ Xingxue Tong
                                       )     -----------------------------------
                                       )         Xingxue Tong
                                       )         Authorised Signatory
                                       )
in the presence of:

/s/ Xiangchun Wang
------------------------------------
Witness

                                       6
<PAGE>
For and on behalf of                   )
LINYANG SOLAR POWER                    )
 INVESTMENT HOLDING LTD                )
                                       )     /s/ Yonghua Lu
                                       )     -----------------------------------
                                       )         Yonghua Lu
                                       )         Authorised Signatory
                                       )
in the presence of:

/s/ Xiangchun Wang
------------------------------------
Witness

SZE HIU SHUN                           )
                                       )
                                       )     /s/ Sze Hiu Shun
                                       )     -----------------------------------
                                       )         Sze Hiu Shun
                                       )
                                       )
                                       )
in the presence of:

/s/ Xiangchun Wang
------------------------------------
Witness

                                       7

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