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???????? ?????? ????? ?????? (HPMC) 0.5? ???????? ??????? ?? ???? ???? Zhejiang Haishen New Materials Co., Ltd.? ?? ???? ?????? ????? ??????????? ??????? ??? ???? ???? ?? ????? ????????. ????? ??? ?????? ???? ?????? ??????? ???????? ?? ???????? ??????? ????????? ????????? ??? ????? ???????? ??????? ????????? ?????? ???????. ????? ??? ?????? ?????? ??????? ?????? ??? ????? ?????? ????? ?????? ?????? ?????????? ??? ????? ??????? ????? ????? ?????? ???????. ?? ???? ???????? ????? HPMC ?????? ??????? ?? ??????? ???????? ??? ???? ???? ?????? ???????. ???????? ??? ???? ????? ?????? ?? ??????? ?????? ?????? ?? ??????? ?????? ??? ???? ???? ???????? ???????? ???????. ????? ???? Zhejiang Haishen New Materials Co., Ltd. ??????? ?????????? ???? ?? ??? ???????? ?????? ????? ?????? ??????? ??????? ???????? ??? ???? ?????? ?????? ??????????. ???? HPMC 0.5 ????? ??? ?????? ??? ???? ?????? ?????? ?????? ?????? ?????? ????????? ??????.