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