COOPERATIVE CONTRACT

                                                                   Exhibit 10.21

                              Cooperative Contract
              On the Exploitation Project of Nano Calcium Carbonate


Party A: Shandong Shengda Technology Co., Ltd
Party B: Polymer Modification  Research Lab of Qingdao University of Science and
Technology
Party C: Qingdao Siwei Chemical Co., Ltd


In line with the principle of reciprocity and mutual benefit and the operational
mechanism of combining "academic research with production", the three parties A,
B and C hereby, in light of the issue of exploitation of nano calcium carbonate,
enter into the following agreements:

1.    Party A entrusts Party B to conduct  research and development for the nano
      calcium  carbonate  products  produced  by  Party A,  including  Polyvinyl
      Chloride (PVC),  Polypropylene  (PP),  Polyethylene (PE), ABS, BOPP, BOPE,
      Compound  Agglomerate  of Nano Calcium  Carbonate,  General  Thermoplastic
      Colophony,  Non-dripping Film for Greenhouses,  Colophony Products, and so
      on.  Meanwhile,   Party  A  entrusts  Party  B  to  provide  the  relevant
      consultation and technological services relating to the technology of nano
      calcium  carbonate  for clients of Party A to assist them in their efforts
      to increase their market shares.
2.    Party B accepts the  entrustment  from Party A,  conducting  researches of
      technical  modification  and  application  for the nano calcium  carbonate
      products,  guiding their industrial applications,  and providing technical
      services for the sales of Party A.
3.    The term of the  contract is five years.  Party A pays Party B the project
      expenditure  for   researching  and  exploiting  nano  calcium   carbonate
      amounting  to RMB  60,000  (sixty  thousand)  yuan as the  expenditure  of
      experiment fee, scientific consultation fee and traveling expenses, and so
      on. The  expenditure  shall be paid in two  separate  payments.  The first
      payment in the amount of RMB 20,000  (twenty  thousand) yuan shall be paid
      within one month after signing this contract, and the remaining payment in
      the amount of RMB 40,000  (forty  thousand)  yuan shall be paid off within
      one year.  After three years,  Party A shall  properly pay more  technical