??????? ??????? ??????? ?????????? ?????, ???? ?? ??????? ????? ????? ????????? ????????? ??? ??????????????? ???? ????? ???????? ????????? ?????? ?????????? ???????????? ??????, ????? ??????? ???? Hpmc, ???? ??????????? ??? ??? ?????? ?????, ??????? ??????? ???????????????? ?????? 1990 ??????? ??-??????? ???????? ???? ???????? ??? ????????? Zhejiang Haishen New Materials Co., Ltd. ??, ??? ????? ??????? ?????? ??? ????????? ????? ????? ???? ???????? ??????? ??????? ????? ?????? ???????? ??? ????? ????? ??????? ???? Hpmc ? ??????? ??? ???????? ????, ???????? ??? ??????? ???? ????? ???????, ????????????? ??? ???????? ??????????????? ????? ??????? ??????? ????????? ??? ?????? ?????? ???? ?????? ????? ???????? ????????????? ?????? ????? ?????, Zhejiang Haishen New Materials Limited ?????? ???????? ???? ??????? ??????????????? ???? ??????? ????? ?????? ?????? ??????? ???? ??????? ???, ???? ??? ????????????? ???????? ??????????????? ?????? ????? ???? ?????? ?????? ?????? ????