Document:

EXHIBIT 10.6

                                                     July 22, 2004

China Unistone Acquisition Corporation
4 Columbus Circle, 5th Floor
New York, New York 10019

EarlyBirdCapital, Inc.
600 Third Avenue
33rd Floor
New York, New York 10016

      Re:   Initial Public Offering

Gentlemen:

            The undersigned stockholder and special advisor of China Unistone
Acquisition Corporation ("Company"), in consideration of EarlyBirdCapital, Inc.
("EBC") entering into a letter of intent ("Letter of Intent") to underwrite an
initial public offering of the securities of the Company ("IPO") and embarking
on the IPO process, hereby agrees as follows (certain capitalized terms used
herein are defined in paragraph 11 hereof):

            1. If the Company solicits approval of its stockholders of a
Business Combination, the undersigned will vote all Insider Shares owned by him
in accordance with the majority of the votes cast by the holders of the IPO
Shares.

            2. In the event that the Company fails to consummate a Business
Combination within 18 months from the effective date ("Effective Date") of the
registration statement relating to the IPO (or 24 months under the circumstances
described in the prospectus relating to the IPO), the undersigned will take all
reasonable actions within his power to cause the Company to liquidate as soon as
reasonably practicable. The undersigned hereby waives any and all right, title,
interest or claim of any kind in or to any distribution of the Trust Fund (as
defined in the Letter of Intent) as a result of such liquidation with respect to
his Insider Shares ("Claim") and hereby waives any Claim the undersigned may
have in the future as a result of, or arising out of, any contracts or
agreements with the Company and will not seek recourse against the Trust

<PAGE>

China Unistone Acquisition Corporation
EarlyBirdCapital, Inc.
July 22, 2004
Page 2

Fund for any reason whatsoever.

            3. In order to minimize potential conflicts of interest which may
arise from multiple affiliations, the undersigned agrees to present to the
Company for its consideration, prior to presentation to any other person or
entity, any suitable opportunity to acquire an operating business, until the
earlier of the consummation by the Company of a Business Combination, the
liquidation of the Company or until such time as the undersigned ceases to be a
special advisor of the Company, subject to any pre-existing fiduciary
obligations the undersigned might have.

            4. The undersigned acknowledges and agrees that the Company will not
consummate any Business Combination which involves a company which is affiliated
with any of the Insiders unless the Company obtains an opinion from an
independent investment banking firm reasonably acceptable to EBC that the
business combination is fair to the Company's stockholders from a financial
perspective.

            5. Neither the undersigned, any member of the family of the
undersigned, nor any Affiliate of the undersigned will be entitled to receive
and will not accept any compensation for services rendered to the Company prior
to the consummation of the Business Combination; provided that the undersigned
shall be entitled to reimbursement from the Company for his out-of-pocket
expenses incurred in connection with seeking and consummating a Business
Combination.

            6. Neither the undersigned, any member of the family of the
undersigned, or any Affiliate of the undersigned will be entitled to receive or
accept a finder's fee or any other compensation in the event the undersigned,
any member of the family of the undersigned or any Affiliate of the undersigned
originates a Business Combination.

            7. The undersigned will escrow his Insider Shares for the three year
period commencing on the Effective Date subject to the terms of a Stock Escrow
Agreement which the Company will enter into with the undersigned and an escrow
agent acceptable to the Company.

            8. The undersigned's biographical information furnished to the
Company and EBC and attached hereto as Exhibit A is true and accurate in all
respects, does not omit any material information with respect to the
undersigned's background and contains all of the information required to be
disclosed pursuant to Section 401 of Regulation S-K, promulgated under the
Securities Act of 1933. The undersigned's Questionnaire furnished to the Company
and EBC and annexed as Exhibit B hereto is

<PAGE>

China Unistone Acquisition Corporation
EarlyBirdCapital, Inc.
July 22, 2004
Page 3

true and accurate in all respects. The undersigned represents and warrants that:

      (a) he is not subject to or a respondent in any legal action for, any
injunction, cease-and-desist order or order or stipulation to desist or refrain
from any act or practice relating to the offering of securities in any
jurisdiction;

      (b) he has never been convicted of or pleaded guilty to any crime (i)
involving any fraud or (ii) relating to any financial transaction or handling of
funds of another person, or (iii) pertaining to any dealings in any securities
and he is not currently a defendant in any such criminal proceeding; and

      (c) he has never been suspended or expelled from membership in any
securities or commodities exchange or association or had a securities or
commodities license or registration denied, suspended or revoked.

            9. I have full right and power, without violating any agreement by
which I am bound, to enter into this letter agreement and to serve as a special
advisor to the Company.

            10. I authorize any employer, financial institution, or consumer
credit reporting agency to release to EBC and its legal representatives or
agents (including any investigative search firm retained by EBC) any information
they may have about my background and finances ("Information"). Neither EBC nor
its agents shall be violating my right of privacy in any manner in requesting
and obtaining the Information and I hereby release them from liability for any
damage whatsoever in that connection.
<PAGE>

China Unistone Acquisition Corporation
EarlyBirdCapital, Inc.
July 22, 2004
Page 4

            11. As used herein, (i) a "Business Combination" shall mean an
acquisition by merger, capital stock exchange, asset or stock acquisition,
reorganization or otherwise, of an operating business selected by the Company;
(ii) "Insiders" shall mean all officers, directors and stockholders of the
Company immediately prior to the IPO; (iii) "Insider Shares" shall mean all of
the shares of Common Stock of the Company owned by an Insider prior to the IPO;
and (iv) "IPO Shares" shall mean the shares of Common Stock issued in the
Company's IPO.

                                       Peter F. Tufo
                                       -------------
                                       Print Name of Insider

                                       /s/ Peter F. Tufo
                                       -----------------
                                       Signature
<PAGE>

                                    Exhibit A

      Peter F. Tufo has served as an advisory partner with E. J. McKay & Co.,
Inc., a cross-border mergers and acquisitions advisory and corporate strategy
consulting firm specializing in China-related transactions, since January 2002.
He also founded Tufo Associates, Inc., a private consulting firm, in June 2001
and has provided private consulting services since its founding. Prior to this,
Mr. Tufo served as the ambassador for the United States to the Republic of
Hungary from November 1997 to April 2001. From October 1990 to November 1997,
Mr. Tufo was an attorney at Milbank, Tweed, Hadley & McCloy, LLC, a New
York-based law firm, and from January 1993 to August 1996, he was a managing
director of investment banking at Merrill Lynch. Mr. Tufo received his B.A. from
Beloit College and a J.D. from Yale Law School.EXHIBIT 10.7

                                                     July 22, 2004

China Unistone Acquisition Corporation
4 Columbus Circle, 5th Floor
New York, New York 10019

EarlyBirdCapital, Inc.
600 Third Avenue
33rd Floor
New York, New York 10016

      Re:   Initial Public Offering

Gentlemen:

            The undersigned stockholder and special advisor of China Unistone
Acquisition Corporation ("Company"), in consideration of EarlyBirdCapital, Inc.
("EBC") entering into a letter of intent ("Letter of Intent") to underwrite an
initial public offering of the securities of the Company ("IPO") and embarking
on the IPO process, hereby agrees as follows (certain capitalized terms used
herein are defined in paragraph 11 hereof):

            1. If the Company solicits approval of its stockholders of a
Business Combination, the undersigned will vote all Insider Shares owned by him
in accordance with the majority of the votes cast by the holders of the IPO
Shares.

            2. In the event that the Company fails to consummate a Business
Combination within 18 months from the effective date ("Effective Date") of the
registration statement relating to the IPO (or 24 months under the circumstances
described in the prospectus relating to the IPO), the undersigned will take all
reasonable actions within his power to cause the Company to liquidate as soon as
reasonably practicable. The undersigned hereby waives any and all right, title,
interest or claim of any kind in or to any distribution of the Trust Fund (as
defined in the Letter of Intent) as a result of such liquidation with respect to
his Insider Shares ("Claim") and hereby waives any Claim the undersigned may
have in the future as a result of, or arising out of, any contracts or
agreements with the Company and will not seek recourse against the Trust

<PAGE>

China Unistone Acquisition Corporation
EarlyBirdCapital, Inc.
July 22, 2004
Page 2

Fund for any reason whatsoever.

            3. In order to minimize potential conflicts of interest which may
arise from multiple affiliations, the undersigned agrees to present to the
Company for its consideration, prior to presentation to any other person or
entity, any suitable opportunity to acquire an operating business, until the
earlier of the consummation by the Company of a Business Combination, the
liquidation of the Company or until such time as the undersigned ceases to be a
special advisor of the Company, subject to any pre-existing fiduciary
obligations the undersigned might have.

            4. The undersigned acknowledges and agrees that the Company will not
consummate any Business Combination which involves a company which is affiliated
with any of the Insiders unless the Company obtains an opinion from an
independent investment banking firm reasonably acceptable to EBC that the
business combination is fair to the Company's stockholders from a financial
perspective.

            5. Neither the undersigned, any member of the family of the
undersigned, nor any Affiliate of the undersigned will be entitled to receive
and will not accept any compensation for services rendered to the Company prior
to the consummation of the Business Combination; provided that the undersigned
shall be entitled to reimbursement from the Company for his out-of-pocket
expenses incurred in connection with seeking and consummating a Business
Combination.

            6. Neither the undersigned, any member of the family of the
undersigned, or any Affiliate of the undersigned will be entitled to receive or
accept a finder's fee or any other compensation in the event the undersigned,
any member of the family of the undersigned or any Affiliate of the undersigned
originates a Business Combination.

            7. The undersigned will escrow his Insider Shares for the three year
period commencing on the Effective Date subject to the terms of a Stock Escrow
Agreement which the Company will enter into with the undersigned and an escrow
agent acceptable to the Company.

            8. The undersigned's biographical information furnished to the
Company and EBC and attached hereto as Exhibit A is true and accurate in all
respects, does not omit any material information with respect to the
undersigned's background and contains all of the information required to be
disclosed pursuant to Section 401 of Regulation S-K, promulgated under the
Securities Act of 1933. The undersigned's Questionnaire furnished to the Company
and EBC and annexed as Exhibit B hereto is

<PAGE>

China Unistone Acquisition Corporation
EarlyBirdCapital, Inc.
July 22, 2004
Page 3

true and accurate in all respects. The undersigned represents and warrants that:

      (a) he is not subject to or a respondent in any legal action for, any
injunction, cease-and-desist order or order or stipulation to desist or refrain
from any act or practice relating to the offering of securities in any
jurisdiction;

      (b) he has never been convicted of or pleaded guilty to any crime (i)
involving any fraud or (ii) relating to any financial transaction or handling of
funds of another person, or (iii) pertaining to any dealings in any securities
and he is not currently a defendant in any such criminal proceeding; and

      (c) he has never been suspended or expelled from membership in any
securities or commodities exchange or association or had a securities or
commodities license or registration denied, suspended or revoked.

            9. I have full right and power, without violating any agreement by
which I am bound, to enter into this letter agreement and to serve as a special
advisor to the Company.

            10. I authorize any employer, financial institution, or consumer
credit reporting agency to release to EBC and its legal representatives or
agents (including any investigative search firm retained by EBC) any information
they may have about my background and finances ("Information"). Neither EBC nor
its agents shall be violating my right of privacy in any manner in requesting
and obtaining the Information and I hereby release them from liability for any
damage whatsoever in that connection.
<PAGE>

China Unistone Acquisition Corporation
EarlyBirdCapital, Inc.
July 22, 2004
Page 4

            11. As used herein, (i) a "Business Combination" shall mean an
acquisition by merger, capital stock exchange, asset or stock acquisition,
reorganization or otherwise, of an operating business selected by the Company;
(ii) "Insiders" shall mean all officers, directors and stockholders of the
Company immediately prior to the IPO; (iii) "Insider Shares" shall mean all of
the shares of Common Stock of the Company owned by an Insider prior to the IPO;
and (iv) "IPO Shares" shall mean the shares of Common Stock issued in the
Company's IPO.

                                      Vincent Lin
                                      -----------
                                      Print Name of Insider

                                      /s/ Vincent Lin
                                      ---------------
                                      Signature
<PAGE>

                                    Exhibit A

      Vincent Lin has served as the president of Goldsun Computer &
Communication Co., Ltd., a provider of software and network services for large
companies, including financial institutions, in China, since October 1999. He
has also been the president of Azure International Incorporated, a company
engaged in real estate development, venture capital and the international
transfer of technology, since July 1997. Mr. Lin has been deputy chairman of the
board of directors of MultiVision Systems & Networks Ltd., a company listed on
the Stock Exchange of Singapore that builds and implements video surveillance
products and solutions in China, since September 2002. He has also been a board
member of the Armarda Group Ltd., a company listed on the Stock Exchange of
Singapore that provides an integrated suite of services for the banking and
financial services industry in China, since its inception in November 2001 and
of e-Skylink Telecommunications Co., Ltd., a provider of EDI/B2B solutions and
services in Taiwan and the PRC, since September 1998. Mr. Lin received a B.S.
from Georgetown University and a J.D. from the University of California's
Hastings College of Law.

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