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