uses: (1)the precision casting field

      (2)the top grade ceramic industry

      (3)the polishing material industry

      (4)the stuffing field

      (5)the special fire-resisting industry

      (6)the top grade paper-making industry

      (7)the high quality stuffing of chemical industry

      (8) the high quality stuffing of binder industry

      (9) the high quality stuffing of plastic industry  and so on.