AMENDMENT
      TO INVESTORS’ RIGHTS AGREEMENT

     

    This
      Amendment to Investors’ Rights Agreement is entered into as of December 27,
      2007, by and among Huiheng Medical, Inc., a Nevada corporation (the “Company”),
      and those holders of outstanding shares of Series A Preferred Stock issued
      by
      the Company (the “Series A Holders”) who execute this Amendment, with respect to
      the following:

     

    A. Under
      the
      terms of the Securities Exchange Agreement dated as of May 15, 2007 (the
“Exchange Agreement”) by and among the Company (then known as Mill Basin
      Technologies, Ltd.) and various other parties, including the shareholders of
      Allied Moral Holdings, Ltd. (with a portion of such shareholders receiving
      shares of Series A Preferred Stock of the Company), the Company agreed to assume
      the registration obligations of Allied Moral Holdings under the Investors’
Rights Agreement of January 11, 2007 (the “Rights Agreement”), subject to
      certain conditions;

     

    B. As
      a
      result of the recent changes in Rule 144 promulgated by the Securities and
      Exchange Commission, and the lock up agreements that will be required by the
      underwriters of the currently contemplated public offering of the common stock
      of the Company, the Series A Holders and the Company contemplate that the Series
      A Holders will be able to sell their shares of common stock issuable upon
      conversion of the Series A Preferred Stock (the “Conversion Shares”) under Rule
      144 simultaneously or shortly after the expiration of the 90 day lock up period
      set forth in the lock up agreements. As such, the Series A Holders and the
      Company believe that there is no longer any utility to require the Company
      to
      file a registration statement for the resale of the Conversion Shares;
      and

     

    C. To
      remove
      any ambiguity relating to the terms of the Rights Agreement that remain in
      effect, the Series A Holders and the Company desire to confirm that any
      potential penalties associated with either the failure to obtain the
      registration of the Conversion Shares within the time specified in the Rights
      Agreement or the failure to maintain such registration in effect shall be waived
      and extinguished.

     

    NOW,
      THEREFORE, for and in consideration of the forgoing and the following terms
      and
      conditions, the parties hereto agree as follows:

     

    1. Termination
      of Registration Obligations.
      Any
      remaining obligations in the Rights Agreement that have been assumed by the
      Company under the Exchange Agreement are hereby terminated.

     

    2. Waiver
      of Damages.
      Any
      damages related to the Rights Agreement that have accrued or may accrue in
      the
      future are hereby waived and extinguished.

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

     

    3. Processing
      of Transfers.
      Within
      five business days after the business day on which the Company receives (i)
      a
      notice that the Conversion Shares have been sold pursuant to Rule 144 (or of
      the
      completion of a period during which the Conversion Shares need to bear a
      restricted securities legend under applicable securities laws), (ii) the
      original certificates representing the shares of Series A Preferred Stock (or
      Conversion Shares, as the case may be) that were issued with a restricted
      securities legend, and (iii) to the extent required by Rule 144, customary
      representation letters and/or broker letters concerning compliance with the
      requirements of Rule 144, the Company shall deliver (or cause to be delivered)
      to its transfer agent appropriate instruction and opinion letters directing
      the
      delivery of certificates for the Conversion Shares without legends. This
      obligation may be satisfied, when permitted by applicable legal requirements,
      by
      delivery of entries reflecting electronic transfers of the Conversion Shares
      to
      a brokerage account (designated by the applicable Series A Holder) with the
      Depository Trust Company through its Deposit Withdrawal Agent Commission
      System.

     

    This
      Amendment may be executed in one or more counterparts, all of which when taken
      together shall constitute one in the same instrument, and shall be effective
      when it has been signed by the Company and the holders of more than a majority
      of the outstanding shares of Series A Preferred Stock.

     

    
      	
              HUIHENG
                MEDICAL, INC.

               

              By:               

                  Li
                Bo,
                Secretary

               

               

            
	
              SERIES
                A HOLDER

               

              Name:                                                                                                                               

               

              By:                                                                                                                                    

               

              Title:                                                                                                                                  

                       
                (If signing in a representative
                capacity)

            


    

    


    
      
         

      

      
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