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