???? ??????? Lug 900# ????????? ????????

???? ??????? Lug 900# ?????? ?? ???? Shijiazhuang Deye Piping Industries Co.,Ltd. ?? ???? ???? ?????? ?????? ???? ????????? ????????. ?? ????? ??? ?????? ???? ?????? ??? ??????? ??? ???? ?? ????? ?????? ??????. ???? ????? ?????? ?????? ??????? ???????? ??? ?????? ??? ????? ???? ???????? ???????? ????? ?? ???? ?????? ???? ??????? Lug 900# ???? ??? ???? ????? ????? ????? ??????? ???????? ??? ????? ??????? ??????? ????? ?? ?????????. ???? ??????? ??????? ??????? ????? ???????? ??????? ??? ???? ???? ??????? ??????? ?????? ?? ??????? ?????? ??? ?????? ?? ?????? ?? ??????? ?????? ???????? ????? ???????? ????????. ?? ????? ??? ??????? ??????? ???????? ?????? ???????? ????? ?????? ??????? ?????? ???????? ????????? ???? ?????? ????? ?????? ?????? ???????? ??? ???? ??????? Lug 900# ???? ???? ???????? ???? ????????? ?????? ?? ?????? ???????