???? ??????? ??????? ???????: ??????? ??????????

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