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???? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ?? ?????? ?????? ?????? ?? ????? ???????? ????? ?????? ???????? ?????? ?? ?????? ??????? ??????? ?? ????????? ???????? ????????. ?? ????? ?????? ?????? ?????? ?????? ??? ?????? ??????? ?? ??????? ??????? ?????? ?????? ???????? ??? ?????? ?????? ????????? ?? ???????? ?????????? ??????? ?????? ???????? ??????? ??????? ??????????. ????? ?????? ?????? ?????? ?? ????? ???????? ????? ????? ???? ??????? ????? ???? ?? ?????? ????? ?????????? ??? ???? ?????? ?? ?????? ?????? ?????. ??? ?????? ????? ?? ???? ????? ??? ??????? ??????? ?????? ?PVC? ?CPVC? ??? ???? ?????? ?????? ?????? ???????? ????? ?????? ??? ????? ???? ????? ??? ?????? ?????? ?????? ????? ???? ??????? ???????? ????????? ??? ???? ?????. ???????? ????????. ???? ?????? ?????? ?????? ???? ??????? ?????? ??????? ?????? ?? ??????? ????? ???? ?????? ?????? ??????? ?? ?????? ??????? ?? ???????? ???? ??? ????? ??? ??????? ????? ?? ???????? ?? ??????? ??? ?????? ?????? ?????? ?? ????? ???????? ?? Shijiazhuang Deye ?? ?????? ??????? ?????? ?? ?????? ??????? ???? ??????????