???? ?????? Sch160 ??? ???????? ????? ?????? - ????? ???? ?????? ???????

???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ?? ????? ???????? ??? ???????? Sch160? ????? ?????? ????? ?????? ?????? ????????? ????????. ??? ????? ???????? ??? ???????? ????? ???????? ???? ????? ?????? ????? ??????? ???????? ??? ?? ????? ???????? ??? ???????? Sch160 ????? ???? ????? ????? ??????? ???????? ??? ?????? ?????? ????????? ?? ??????? ?????? ??? ????? ????? ?????? ?????? ?????????? ??????? ????? ???????. ????? ??? ???????? ????? ?????? ????????? ?? ?????? ?????????????? ????? ????? ???????. ????? ???????? ??? ???????? ?????? ???????? ?????? ?????? ?????????? ???????? ????????. ?? ??????? ????? ??? ?????? ??????? ????? ???? ?? ???????? ????? ????????? ???????? ???????? ?? Shijiazhuang Deye Piping Industries Co., Ltd.? ??? ??????? ?????? ?????? ??? ?????? ?????? ???? ???? ??????? ???????. ???? ??? ?????? ?? ?????? ?????? ??????? ???????? ????? ?????? ??? ?????? ???? ???? ?????? ???????. ???? ??? ????? ?????? ?????? ?? ???????? ??? ???????? Sch160 ???? ???? ?? ???? ???????