????? ????? 5D Bend ?????????? ?? ??? ????????

???? ??? ???????? 5D ???? ?????? ?? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?? ????? ???????? 5D ????? ??? ?????? ???? ??? ????? ?? ????? ????????? ??? ???? ?????? ??? ??????? ?????? ?????? ?????? ????? ??????? ????? ?? ???? ??????? ????? ?? ????? ???????? 5D ????? ????? ?????? ???????? ??? ???? ??????? ????? ????? ?? ????????? ???????? ????????. ???? ??????? ??????? ???????? ?????? ?????? ???????? ??? ???????? 5D ????? ??? ???? ?????? ??????? ????? ????? ????? ??????????? ???? ??? ???? ?? ????? ????? ?????? ?? ?????????????? ?? ????? ??????? ??? ???????? 5D ????? ??? ???? ???? ?????? ?? ??? ??????? ???????? ??????????. ??? ?????? ?????? ???????? ?????? ???????? ????????? ????????? ?????? ??????? ??????? ????????? ?? ?? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ?????? ?????? 5D ?? ?????? ?????? ?????? ????? ????? ???????? ???? ?????? ??????? ??????. ???? ??? ????? ?????? ?????? ?? ???? ???????? 5D ????? ???????? ??????