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