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

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