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