???? ??? ???? ?????? 600 ??? ????????? ??????? ???????

???? ????? 600LBS ?????? ?? ???? Shijiazhuang Deye Piping Industries Co.,Ltd. ?? ???? ???? ?????? ?????? ?? ???? ?????? ????????? ???????? ?????? ????????? ????????. ?? ????? ???? ????? ??? ???? ?????? ?????? ????? ?????? ????? ??????? ??????? ?? ??????? ???? ?? ????????? ??? ?????? ???????? ???? ????? ?????? ?????????? ??????? ??? ?? ????? ???? ????? ??? ????? ???? ????? ????? ??????? ???????? ??? ????? ??????? ????????? ?? ????? ??????? ??????? ?? ??????? ??? ??????? ??????? ???????? ?????? ?????? ???????? ???? ???? ????? 600LBS ????? ??? ????? ??????? ?? ????? ?????? ????? ?????. ??? ????? ?? ?????? ?? ??????? ??????? ?????? ??????? ??????? ???????? ???? ?????? ?????? ????? ???? ????? ???????? ??????? ???????? ??? ???? ???????? ???? ????? ?????? ?? ??????? ????? ????????. ???? ??????? ????? ?????? ?? ?????? ?????????? ?? ????????????? ?? ????????? ???????? ??????? ??? ???? ????? 600 ??? ????? ??? ?? ?????? ??????? ?????? ?????? ?? ??????.