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

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