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