Document:

EXTENSION OF CLOSING DATE

         This Extension of Closing Date (the "Extension") is dated as of April
28, 2006 by and among M-GAB Development Corporation, a corporation formed under
the laws of the State of Florida ("M-GAB"), DaLian Acquisition Corp., a
corporation newly formed under the laws of the State of Florida and a wholly
owned subsidiary of M-GAB (the "Merger Sub"), China Agro Sciences Corp., a
corporation formed under the laws of the State of Florida ("DaLian US"), and the
following M-GAB Shareholders: Carl M. Berg and Sadie, LLC, a Nevada limited
liability company (the "Shareholders"). M-GAB, the Merger Sub, DaLian US and the
Shareholders are referred to herein individually as a "Party" and collectively
as the "Parties."

                                    RECITALS

         WHEREAS, the Parties are parties to that certain Agreement and Plan of
Merger dated March 15, 2006 (the "Agreement"), which provides for a closing on
April 28, 2006, unless extended by agreement of the parties;

         WHEREAS, all closing documents have been signed as of the date hereof,
however DaLian US cannot deliver the financial statements as required by the
Agreement until Monday, May 1, 2006, and therefore the parties desire and agree
to extend the closing of the transaction contemplated by the Agreement to May 1,
2006.

         NOW, THEREFORE, in consideration of the premises and the mutual
covenants, representations and warranties contained herein, the Parties,
intending to be legally bound, hereby agree as follows:

         1. The closing date of the transactions contemplated by the Agreement
is hereby extended to Monday, May 1, 2006.

         2. All other terms and conditions of the Agreement shall remain in full
force and effect.

[remainder of page intentionally left blank; signature page to follow]

                                     Page 1
<PAGE>

         IN WITNESS WHEREOF, the parties have duly executed this Agreement as of
the date first above written.

M-GAB DEVELOPMENT CORPORATION

By:      /s/ Carl M. Berg
         -----------------------------------
Name:    Carl M. Berg
Title:   President

DALIAN ACQUISITION CORP

By:      /s/ Carl M. Berg
         -----------------------------------
Name:    Carl M. Berg
Title:   President

M-GAB SHAREHOLDERS

/s/ Carl M. Berg
Carl M. Berg

Sadie, LLC

By   /s/ Carl M. Berg
  ------------------------------------------
     Carl M. Berg, Managing Member

CHINA AGRO SCIENCES CORP.

By:      /s/ Zhengquan Wang
Name:    Zhengquan Wang
Title:   President

                                     Page 2AGREEMENT TO TERMINATE WARRANTS

      This Agreement to Terminate Warrants (this "Termination") is entered into
effective this 28th day of April, 2006 by and between Clark Johnson, an
individual ("Holder") and M-GAB Development Corporation, a Florida corporation
("Company").

                                    RECITALS

      WHEREAS, Holder and Company are parties to that certain Warrant dated
March 8, 2004 (the "Warrant") wherein Holder is entitled to purchase up to
166,667 shares of common stock of the Company at an exercise price of $0.15 per
share (the "Exercise Price");

      WHEREAS, Holder is the holder of 166,667 shares of common stock of the
Company (the "Shares");

      WHEREAS, control of the Company has changed, the Holder no longer desires
to be a shareholder in the Company, and in exchange for the sum of $35,000, has
agreed to sell the Shares to a third party as set forth in that certain Share
Purchase Agreement dated March 15, 2006;

      WHEREAS, Holder and Company mutually desire to terminate the Warrant
effective as of the date hereof.

      NOW, THEREFORE, for good and adequate consideration, the receipt of which
is hereby acknowledged, the parties hereby agree as follows:

      1. The Warrant is hereby terminated in its entirety, effective as of the
date hereof.

      IN WITNESS WHEREOF, the parties hereto, agreeing to be bound hereby,
execute this Amendment upon the date first set forth above.

"Holder"                                      "Company"

                                              M-GAB Development Corporation

/s/ Clark Johnson                             /s/ Carl M. Berg
------------------------------------          ----------------------------------
By:      Clark Johnson, an individual         By:      Carl M. Berg
                                              Its:     PresidentAGREEMENT TO TERMINATE WARRANTS

      This Agreement to Terminate Warrants (this "Termination") is entered into
effective this 28th day of April, 2006 by and between AMRES Holding, LLC, a
Nevada limited liability company ("Holder") and M-GAB Development Corporation, a
Florida corporation ("Company").

                                    RECITALS

      WHEREAS, Holder and Company are parties to that certain Warrant dated
March 8, 2004 (the "Warrant") wherein Holder is entitled to purchase up to
166,667 shares of common stock of the Company at an exercise price of $0.15 per
share (the "Exercise Price");

      WHEREAS, Holder is the holder of 166,667 shares of common stock of the
Company (the "Shares");

      WHEREAS, control of the Company has changed, the Holder no longer desires
to be a shareholder in the Company, and in exchange for the sum of $35,000, has
agreed to sell the Shares to a third party as set forth in that certain Share
Purchase Agreement dated March 15, 2006;

      WHEREAS, Holder and Company mutually desire to terminate the Warrant
effective as of the date hereof.

      NOW, THEREFORE, for good and adequate consideration, the receipt of which
is hereby acknowledged, the parties hereby agree as follows:

      1. The Warrant is hereby terminated in its entirety, effective as of the
date hereof.

      IN WITNESS WHEREOF, the parties hereto, agreeing to be bound hereby,
execute this Amendment upon the date first set forth above.

"Holder"                                     "Company"

AMRES Holding, LLC                           M-GAB Development Corporation

/s/ Vince Rinehart                           /s/ Carl M. Berg
----------------------------------           ----------------
By:      Vince Rinehart                      By:      Carl M. Berg
Its:     Managing Member                     Its:     PresidentAGREEMENT TO TERMINATE OPTIONS

      This Agreement to Terminate Options (this "Termination") is entered into
effective this 28th day of April, 2006 by and between Kevin Gadawski, an
individual ("Holder") and M-GAB Development Corporation, a Florida corporation
("Company").

                                    RECITALS

      WHEREAS, Holder ant 6 0 d the Company had a verbal understanding whereby
the Company would grant the Holder options to acquire common stock of the
Company upon approval of such grant by the Securities and Exchange Commission
(the "Options");

      WHEREAS, the approval referenced above was never obtained, and it appears
that obtaining such approval will be overly burdensome, time consuming, and
costly to the Company, and as such there is no written agreement between the
Holder and the Company regarding the Options;

      WHEREAS, control of the Company has changed, and in exchange for the sum
of $20,000, the Holder hereby agrees to terminate its rights to receive the
Options;

      WHEREAS, Holder and Company mutually desire to terminate the Options
effective as of the date hereof.

      NOW, THEREFORE, for good and adequate consideration, the receipt of which
is hereby acknowledged, the parties hereby agree as follows:

      1. The Options and the Holder's right to receive the Options, is hereby
terminated in its entirety, effective as of the date hereof.

      2. The Company shall deliver to the Holder the sum of $20,000 within two
(2) business days of the date hereof.

[signature page to follow]

<PAGE>

         IN WITNESS WHEREOF, the parties hereto, agreeing to be bound hereby,
execute this Amendment upon the date first set forth above.

"Holder"                                      "Company"

                                              M-GAB Development Corporation

/s/ Kevin Gadawski                            /s/ Carl M. Berg
---------------------------------------       ----------------
By:      Kevin Gadawski, an individual        By:      Carl M. Berg
                                              Its:     PresidentAGREEMENT TO TERMINATE OPTIONS

      This Agreement to Terminate Options (this "Termination") is entered into
effective this 28th day of April, 2006 by and between Mark Stewart, an
individual ("Holder") and M-GAB Development Corporation, a Florida corporation
("Company").

                                    RECITALS

      WHEREAS, Holder and the Company had a verbal understanding whereby the
Company would grant the Holder options to acquire common stock of the Company
upon approval of such grant by the Securities and Exchange Commission (the
"Options");

      WHEREAS, the approval referenced above was never obtained, and it appears
that obtaining such approval will be overly burdensome, time consuming, and
costly to the Company, and as such there is no written agreement between the
Holder and the Company regarding the Options;

      WHEREAS, control of the Company has changed, and in exchange for the sum
of $20,000, the Holder hereby agrees to terminate its rights to receive the
Options;

      WHEREAS, Holder and Company mutually desire to terminate the Options
effective as of the date hereof.

      NOW, THEREFORE, for good and adequate consideration, the receipt of which
is hereby acknowledged, the parties hereby agree as follows:

      1. The Options and the Holder's right to receive the Options, is hereby
terminated in its entirety, effective as of the date hereof.

      2. The Company shall deliver to the Holder the sum of $20,000 within two
(2) business days of the date hereof.

[signature page to follow]

<PAGE>

      IN WITNESS WHEREOF, the parties hereto, agreeing to be bound hereby,
execute this Amendment upon the date first set forth above.

"Holder"                                    "Company"

                                            M-GAB Development Corporation

/s/ Mark Stewart                            /s/ Carl M. Berg
------------------------------------        -----------------------------------
By:      Mark Stewart, an individual        By:      Carl M. Berg
                                            Its:     President

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