???? ???? ???? ?????? 900 ??? ?? RTJ ????????? ????????

?????? ?????? 900LBS ?? RTJ ?? Shijiazhuang Deye Piping Industries Co.,Ltd. ?? ?? ???? ?????? ?????? ????????? ???????? ???? ????? ?????? ????? ???????. ?? ????? ??? ?????? ??? ??? ??? 900 ??? ??? ???? ?????? ??? ????? ??????? ?????? ????? ??????. ???? ????? RTJ (?????? ?? ????? ??????) ??????? ??????? ????? ???????? ?????? ??? ????? ??????? ??? ?? ????? ??? ?????? ?????? ?????? ????? ????? ????? ??????? ?????? ???? ????????? ???????. ?? ??????? ??????? ?????? ?????? ?????? ????????? ?? ?????? ????? ?? ?????????? ??? ?? ??? ????? ?????? ????????? ?????????? ?????? ??????? ??? ???? ???? Shijiazhuang Deye Piping Industries Co.,Ltd. ????? ?????? ?????? ?????? ????? ????? ??????. ??? ?????? ?????? 900LBS ????? ??? ?????? ?? RTJ ?????? ????? ??? ???????? ??????? ??????????. ???????? ??? ?????? ??????? ???? ??????? ?? ????? ?? ?? ??????? ???????? ????? ????? ??? ???? ???? ?????? ????? ?????