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