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

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