Document:

REVOLVING
      LINE OF CREDIT NOTE

    August
      14, 2007

     

    Not
      to Exceed $210,000 in Principal 

     

    For
      value
      received, the undersigned HAMBRECHT ASIA ACQUISITION CORP., a Delaware
      corporation (“Borrower”),
      promises to pay, in lawful money of the United States, to the order of Robert
      Eu, together with his successors and assigns (“Holder”),
      at
      such address as Holder may direct, the principal sum of Two Hundred Ten Thousand
      Dollars ($210,000) (the “Commitment
      Amount”),
      or so
      much thereof as shall have been advanced and shall remain unpaid hereunder,
      together with interest from date of disbursement at the rate of 4% per annum
      (the “Interest
      Rate”).
      Interest shall be computed at the Interest Rate on the basis of the actual
      number of days during which the principal balance is outstanding, divided by
      365, which shall, for interest computation purposes, be considered one year.
      Notwithstanding anything to the contrary expressed or implied herein, all
      payments made by Borrower hereunder (including, without limitation, any
      prepayments) shall be applied first to pay any fees or expense reimbursement
      then due Holder, second to accrued and unpaid interest due under this Note
      and
      third to the reduction of principal due hereunder.

     

    This
      Note
      is delivered pursuant to, and is subject to all of the terms and conditions
      of,
      that certain Revolving Line of Credit Agreement dated August 14, 2007 (as from
      time to time amended, modified, supplemented and restated, the “Loan
      Agreement”)
      among
      Borrower and Holder. Unless otherwise defined in this Note, capitalized terms
      used in this Note shall have the meanings ascribed to them in the Loan
      Agreement, and in the event of any conflict between the terms of this Note
      and
      the terms of the Loan Agreement, the terms of the Loan Agreement shall
      govern.

     

    Maturity.
      This
      Note shall mature and become due and payable on the Termination
      Date.

     

    Prepayment. Borrower
      may prepay Loans at any time, and reborrow subject to the terms of the Loan
      Agreement.

     

    Event
      of Default.
      Should
      an Event of Default (as defined in the Loan Agreement) occur, Lender shall
      have
      the rights set forth in Section 7 of the Loan Agreement.

     

    Borrower’s
      Acknowledgement.
      Borrower
      acknowledges that Holder is extending the credit contemplated hereby solely
      as
      an accommodation to Borrower, and is willing to do so in reliance upon
      Borrower’s monetary and non-monetary covenants contained herein and in the Loan
      Agreement.

     

    Holder’s
      Acknowledgement.
      The
      Holder acknowledges and agrees that, as specified in Section 5 of the Loan
      Agreement, the Holder has limited recourse against Borrower for repayment of
      any
      and all amounts due and owing under this Note.

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

     

    Miscellaneous.
      If this
      Note (or any payment due hereunder) is not paid when due, Borrower promises
      to
      pay all costs and expenses of collection and reasonable attorneys’ fees incurred
      by the Holder hereof on account of such collection, plus interest at the rate
      applicable to principal, whether or not suit is filed hereon. Borrower consents
      to renewals, replacements and extensions of time for payment hereof, before,
      at,
      or after maturity, consents to the acceptance, release or substitution of
      security for this Note, and waives demand and protest. The indebtedness
      evidenced hereby shall be payable in lawful money of the United States of
      America. In any action brought under or arising out of this Note and the other
      Loan Documents, Borrower, including successor(s) or assign(s), hereby consents
      to the application of New York law. No single or partial exercise of any power
      hereunder, or under any other Loan Document in connection herewith, shall
      preclude other or further exercises thereof or the exercise of any other such
      power.

     

    IN
      WITNESS WHEREOF, Borrower has executed and delivered this Note as of the date
      first above written.

     

    
      	 	HAMBRECHT
              ASIA ACQUISITION CORP. 
	 	 
	 	/s/John
              Wang
	 	By:
              John Wang
	 	
              Its:
                Chief Executive OfficerExhibit
      10.13

     

    
WARRANT
      PURCHASE AGREEMENT

     

    WARRANT
      PURCHASE AGREEMENT (this “Agreement”) made as of this ___________day of
      _________, 2007 among Hambrecht Asia Acquisition Corp., a Delaware corporation
      (the “Company”) and the undersigned (the “Purchasers”).

     

    WHEREAS,
      the Company has filed with the Securities and Exchange Commission (the “SEC”) a
      registration statement on Form S-1, as amended (File No. 333-___________) (the
      “Registration Statement”), in connection with the Company’s initial public
      offering (the “IPO”) of 4,000,000 units (the “Units”), each unit consisting of
      one of the Company’s ordinary shares, $0.001 par value (the “Ordinary Shares”),
      and (ii) one warrant (the “Warrants”), each warrant to purchase one Ordinary
      Share; and

     

    WHEREAS,
      immediately prior to the consummation of the IPO, the Company desires to sell
      in
      a private placement to the Purchasers (the “Placement”) an aggregate of 750,000
      warrants (the “Placement Warrants”) substantially identical to the Warrants
      being issued in the IPO pursuant to the terms and conditions hereof and as
      set
      forth in the Registration Statement, except that the Placement Warrants to
      be
      issued in the Placement shall not be registered under the Securities Act of
      1933, as amended (the “Securities Act”); and

     

    WHEREAS,
      each Purchaser desires to acquire the number of Placement Warrants set forth
      opposite his name on Schedule A hereto; and

     

    WHEREAS,
      except as provided herein, the Placement Warrants shall be governed by the
      Warrant Agreement filed as an exhibit to the Registration Statement;
      and

     

    WHEREAS,
      the Purchasers are entitled to registration rights with respect to the Placement
      Warrants and the Ordinary Shares underlying the Placement Warrants (the
“Underlying Shares”) on the terms set forth in this Agreement;

     

    NOW,
      THEREFORE, for and in consideration of the premises and the mutual covenants
      hereinafter set forth, the parties hereto do hereby agree as
      follows:

     

    1.    Purchase
      of Placement Warrants.
      The
      Purchasers hereby agree, directly or through their nominees, to purchase an
      aggregate of 750,000 Placement Warrants at a purchase price of $1.00 per
      Placement Warrant, or an aggregate of $750,000 (the “Purchase Price”). Such
      purchases shall be in the names and amounts set forth on Schedule A
      hereto.

     

    2.    Closing.
      The
      closing of the purchase and sale of the Placement Warrants (the “Closing”) will
      take place at such time and place as the parties may agree (the “Closing Date”),
      but in no event later than the closing date (the “IPO Closing Date”) of the IPO.
      On or prior to the IPO Closing Date, the Purchasers shall pay the Purchase
      Price
      by wire transfer of funds to the Company. On the Closing Date, the Company
      shall
      transfer the Purchase Price to the trust account at JPMorgan Chase NY Bank,
      maintained by Continental Stock Transfer & Trust Company, acting as trustee
      (the “Trust Account”). The certificates for the Placement Warrants shall be
      placed into escrow pursuant to the Securities Escrow Agreement dated __________,
      2007 by and among Continental and the other signatories thereto.

     

    
      
        
        

      

      
        1

        
          

        

      

      
        
        

      

    

     

    3.    Representations
      and Warranties of the Purchasers.
      Each
      Purchaser hereby represents and warrants to the Company that:

     

    3.1 The
      execution and delivery by the Purchasers of this Agreement and the fulfillment
      of and compliance with the respective terms hereof by the Purchasers do not
      and
      shall not as of the Closing
      conflict with or result in a breach of the terms, conditions or provisions
      of
      any other agreement, instrument, order, judgment or decree to which Purchasers
      are subject to. 

     

    3.2 The
      Purchaser is an “accredited investor” as that term is defined in Rule 501 of
      Regulation D promulgated under the Securities Act.

     

    3.3 The
      Placement Warrants are being acquired for the Purchaser’s own account, only for
      investment purposes and not with a view to, or for resale in connection with,
      any distribution or public offering thereof within the meaning of the Securities
      Act.

     

    3.4 The
      Purchaser has the full right, power and authority to enter into this Agreement
      and this Agreement is a valid and legally binding obligation of the Purchaser
      enforceable against the Purchaser in accordance with its terms.

     

    3.5 The
      Purchaser understands that no United States federal or state agency or any
      other
      government or governmental agency has passed on or made any recommendation
      or
      endorsement of the securities or the fairness or suitability of the investment
      in the securities nor have such authorities passed upon or endorsed the merits
      of the offering of the securities.

     

    4.    Registration
      Rights.
      The
      Purchasers shall have registration rights pursuant to the Registration Rights
      Agreement, dated as of _____________, 2007, by and among the Company and the
      Investors listed on the signature page thereto.

     

    5.    Waiver
      of Claims Against Trust Account.
      Each
      Purchaser hereby waives any and all right, title, interest or claim of any
      kind
      in or to any distributions from the Trust Account with respect to any Ordinary
      Shares acquired by the Purchaser in connection with the exercise of the
      Placement Warrants purchased pursuant to this Agreement ("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 Account for any reason whatsoever. 

     

    6.    Waiver
      and Indemnification.
      Each
      Purchaser hereby waives any and all rights to assert any present or future
      claims, including any right of rescission, against the Company or the
      underwriters in the IPO with respect to their purchase of the Placement
      Warrants, and each Purchaser agrees jointly and severally to indemnify and
      hold
      the Company and the underwriters in the IPO harmless from all losses, damages
      or
      expenses that relate to claims or proceedings brought against the Company or
      such underwriters by Purchasers of the Placement Warrants.

     

    
      
        
        

      

      
        2

        
          

        

      

      
        
        

      

    

     

    7.    Counterparts;
      Facsimile.
      This
      Agreement may be executed in any number of counterparts, each of which when
      so
      executed shall be deemed to be an original and all of which taken together
      shall
      constitute one and the same instrument. This Agreement or any counterpart may
      be
      executed via facsimile transmission, and any such executed facsimile copy shall
      be treated as an original.

     

    8.    Governing
      Law.
      This
      Agreement shall for all purposes be deemed to be made under and shall be
      construed in accordance with the laws of the State of New York. Each of the
      parties hereby agrees that any action, proceeding or claim against it arising
      out of or relating in any way to this Agreement shall be brought and enforced
      in
      the courts of the State of New York or the United States District Court for
      the
      Southern District of New York, and irrevocably submits to such jurisdiction,
      which jurisdiction shall be exclusive. Each of the parties hereby waives any
      objection to such exclusive jurisdiction and that such courts represent an
      inconvenient forum.

     

    IN
      WITNESS WHEREOF, the undersigned have executed this Agreement as of the ____day
      of  ___________, 2007.

    
      
        	 	 	 
	 	HAMBRECHT
                ASIA
                ACQUISITION CORP.
	 
 	 
 	 
 
	 	By:  	 
	 	Name:	 
	 	Title:	 
	 	 	 

      

    

    
      	 	 	 
	 	INSIDERS:
	 	 
	 	AEX
              ENTERPRISES LIMITED
	 
 	 
 	 
 
	 	By:  	 
	 	Name:	 
	 	Title:	 

    

     

    
      
        
        

      

      
        3

        
          

        

      

      
        
        

      

    

     

    SCHEDULE
      A

     

    
      
        
        

      

      
        4

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