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