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

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