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