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