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?? ??????? 12820-80 ?? ???? ???? ?????? ?? ?????? ?????? ???? Shijiazhuang Deye Piping Industry Co., Ltd.. ?? ????? ??? ??????? ?????? ??????? ????? 12820-80? ??? ???? ??????? ?? ?????? ????? ?? ????? ????????? ???????? ?? ???? ?????? ???? ??? ????? ??? ?????? ?????????? ??? ?????? ?????? ?????? ????????? ????????. ???? ??????? ??????? ?????? ?????? ?????? ?????? ????? ???????? ?????? ????? 12820-80 ?????? ?????? ??????? ???? ??? ???? ???????? ?? ??????? ????????. ???? ???????? ?????? ???????? ????????? ???????? ?????? ?? ????? ???????? ????????? ??? ???? ????? ????? ?????? ??????. ?? ??????? ??? ?????? ??????????? ????? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ?????? ????????? ???? ???? ???? ????????. ????? ?????? 12820-80 ?????? ????? ??? ??? ????????? ??? ???? ????? ?????? ???? ????? ?? ??????? ??????