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???????? ?????? ?????? (HPC) ?? ???? ?????? ????? ??????????? ???? ?????? ????? ??? ???? ???? ???????? ???????? ??????? ??????? ?? ????? ??????? ???????. ?????? ???? Zhejiang Haishen New Materials Co., Ltd.? ????? ????? ?????? ?? ??????? ??????? ??? ?? ??? ??????? ????????? ??????? ????????? ????????. ???? ????? ??????????? ??? ??????? ?? ????? ?????? ???????? ??????? ???????? ?????? ?????? ????? ????? ????? ?????? ??? ????? ???????? ?????????? ????????. ??? ?????? ??? ???????? ?????? ?????? ?? ???? ??? ????? ??????? ??? ???? ????? ?????? ????????? ???????? ???????. ?? ????? ???????? ???? ????? ?????? ?? ???? ??????? ?????? ????? ???????. ?? ???????? ???????? ?????? ?????? ???????? ????? ?? ???? ???????? ??????? ????? ?????? ???????. ????? ???? Zhejiang Haishen New Materials Co., Ltd. ????????? ???????? ??? ?????? ?????? ??????? ?? ??????? ???? ????? ??? ????? ???????? ????? ???????? ?????? ?????? ??????. ??? ????? ?? HPC ??????? ????? ?????