??? ??? ???????? ????? ???????? ?? ???? ????? ??????? ????????? ???????

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