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????? ????? ???????? ????? ???????? (MEHEC) ?? ???? Zhejiang Haishen New Materials Co., Ltd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hejiang Haishen New Materials Co., Ltd. ??????? ??????????? ??? ???? ?? ?? ???? ?? MEHEC ???? ?????? ??????? ???????. ???? MEHEC ??????? ?????? ???? ????? ?? ?????? ??????????