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