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

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