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