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