EXHIBIT 4.43
 
 **Guarantee
          Contract**
  **China
        Construction Bank Corporation**
  **Beijing
        Branch**
  
  Guarantee
        (hereinafter referred to as “Party A”): Beijing
        Origin Biotechnology Limited
  Lender
        (hereinafter referred to as “Party B”): China
        Construction Bank Corporation
  Beijing
        Shangdi Sub-Branch
  In
        order
        to ensure the execution of the “Renminbi Capital Loan Contract” (hereinafter
        referred to as the “Master Contract”, contract no.: No.023
        Year 2007 123010 Zi )
        between Beijing
        Origin Seed Limited. (hereinafter referred to as the “Master Contract Debtor”) and Party B, Party A
        agrees to provide guarantee to secure all the lender’s right under the Master
        Contract. According to relevant laws, regulations and rules, Party A and
        Party
        B, upon negotiation, enter into this Contract for their mutual compliance
        and
        performance.
  **Article
        1 Mode of Guarantee**
 
 The
        mode
        of guarantee hereunder is guarantee of joint and several liability provided
        by
        Party A.
 
 Party
        A
        confirms, where the debtor does not execute the debt as described in the
        Master
        Contract, Party B has right to claim Party A bearing the joint and several
        liability immediately on the scope of the guarantee hereunder, no matter
        whether
        the debt is supported by other securities (including but not limited, Guarantee,
        Mortgage, Pledge, Credit Insurance, SBLC etc.)
 
 **Article
        2 Scope of Guarantee**
 
 The
        amount of the Principal hereunder is (Say) **FORTY
        MILLION YUAN** in **Renminbi** (currency) and interest (including compound interest and penalty interest,
        damages, compensation, and other costs for the debt (including but not limited,
        costs of lawsuit, arbitration, travelling, execution, valuation, and auction
        etc.)
 
 **Article
        3**  **Term
        of Guarantee**
 
 The
        term
        of Guarantee hereunder shall be commencing from the execution day hereto
        and
        ending on 2 years later following the termination of the Master Contract,
        In
        case of the renewal of the Debt agreed by Party A, the term of Guarantee
        hereunder shall be ending on 2 years later following the termination of the
        renewal agreement.
 
 **Article
        4 Modification of the Master Contract**
 
 Party
        A
        confirms, where the conditions of the Master Contract are modified by the
        agreement between Party B and Debtor, it seems that, Party A has agreed in
        advance, and Party A’s guarantee liability shall not be reduced or exempted
        except the following two situations,
 
 (i)
              to
                  postpone the term of the Debt
 (ii)
              to
                  increase the amount of the principal of the
                  Debt
  
  **Article
        5 Independence of the Contract**
 
 The
        Contract shall be independent of the Master Contract. The invalidation of
        the
        Master Contract shall not impact upon the effectiveness of the Contract.
        Where
        the Master Contract is seemed to be invalid, Party A shall bear the guarantee
        of
        joint and several liability because of the debt of return
        of
        property or compensation for losses.
 
 **Article
        6 Capacity of Guarantee**
 
 During
        the valid term of the Guarantee, in case that Party A loses the capacity
        of
        guarantee, or commits merger, acquisition, reform with the stock system,
        contracting, lease, asset transfer, association, investment, application
        for
        suspending business for internal rectification, application for dissolution
        or
        bankruptcy and among other circumstances, Party A shall inform Party B in
        writing beforehand, the New legal institution shall bear the obligations
        as
        provided herein; Party A shall provide the new securities, if Party B deems
        the
        new legal institution is not competent, and the new security agreement shall
        be
        entered into.
 
 During
        the valid term of the Guarantee, unless Party B agrees in writing beforehand,
        Party A shall not provide another security for the third party.
 
 **Article
        7 Accounting Supervision to the Guarantor**
 
 During
        the valid term of the Guarantee, Party B has right to supervise Party A’s Fund
        and Asset, and Party A shall provide Financial Report for the
        Supervision.
 
 **Article
        8 Guarantee liability of early settlement**
 
 During
        the valid term of the Guarantee, where Party B announce the Debt shall be
        settled ahead of schedule according to the Master Contract, Party B has right
        to
        ask Party A to bear the guarantee of joint and several liability within 30 bank
        business days commencing from the early settlement day, Party A agrees to
        bear
        the guarantee of joint and several liability as Party B required.
 
 **Article
        9 Transfer of payable debt**
 
 Party
        B
        has right to transfer the payable debt on the scope of the Party A’s Guarantee
        from the bank account opened at the system of the CCB.
  
  **Article
        10 Other matters agreed**
 
 **(i)**
              During
                  the valid term of the Guarantee, in case that the debtor commits
                  merger,
                  acquisition, reform with the stock system, contracting, lease,
                  asset
                  transfer, association, investment, application for suspending business
                  for
                  internal rectification, application for dissolution or bankruptcy
                  and
                  among other circumstances, Party A’s guarantee liability shall not be
                  reduced or exempted.
 **(ii)**
              The
                  Guarantor has obligation to supervise the use of the
                  money.
 **(iii)**
              In
                  the event that Party B provides the debtor with foreign exchange
                  loan,
                  Party A agrees to bear the guarantee of joint and several liability
                  as
                  provided in the foreign exchange loan contract, if the loan is
                  settled
                  with foreign currency, Party B shall obtain the consent from Party
                  A, so
                  the loan shall be settled by the sell price conversion based on
                  foreign
                  exchange quote price of the settlement
                  date.
 **(iv)**
              The
                  guarantor has realized the risk of interest rate enough, if the
                  float
                  interest rate is took up, the Guarantor agrees to the guarantee
                  of joint
                  and several liability because of the interest rate
                  floating.
 **(v)**
              **[****blank ]**
 **(vi)**
              **[****blank ]**
  **Article
        11 Settlement of Dispute**
  Any
        dispute arising from the performance of this Contract may be settled through
        negotiation. If no settlement could be reached, the dispute shall be dealt
        with
        according to (1) below:
  (i)
              bring
                  a lawsuit at the People’s Court where Party B’s domicile is located;
                  or
  (ii)
              to
                  submit the dispute to[intentionally
                  left blank]Arbitration Commission (the place of arbitration is[intentionally
                  left blank])
                  for arbitration according to its arbitration rules then effective
                  at the
                  time of submission. The arbitration award shall be final and binding
                  on
                  the two Parties.
  In
        the
        course of lawsuit or arbitration, the Parties shall continue to perform those
        provisions in this Contract which are not under dispute.
  **Article
        12 Effectiveness of this Contract**
  This
        Contract shall become effective after it is signed by Party A’s legal
        representative (person in charge) or authorized representative and stamped
        with
        its corporate seal and signed by Party B’s person in charge or authorized
        representative and stamped with its corporate seal.
  
  **Article
        13** This
        Contract shall be made in five counterparts.
  **Article
        14** Representations
  (i)
              Party
                  A is fully aware of Party B’s business scope and scope of
                  authority.
  (ii)
              Party
                  A has perused each clause in this Contract. As requested by Party
                  A, Party
                  B has explained correspondingly clauses in this Contract. Party
                  A is fully
                  aware of and understands the meaning and corresponding legal consequences
                  of each clause in this Contract.
  (iii)
              Party
                  A has the right to sign this Contract.
  Party
        A
        (corporate seal): Beijing Origin Seed Limited.
  Legal
        representative (person in charge) or authorized representative (signature):
  /s/
        Gengchen Han
  ***/s/
        CORPORATE SEAL***
  September
        29, 2007
  Party
        B
        (corporate seal): China Construction Bank Corporation Beijing Shangdi
        Sub-Branch
  Legal
        representative (person in charge) or authorized representative (signature):
  /s/
        Qi
        Xue
  ***/s/
        CORPORATE SEAL***
  September
        29, 2007