???? ????? ?????? ?????? 300 ??? ???? ?????? ????????? ???????

???? ??????? Wafer 300LBS ?????? ?? ???? Shijiazhuang Deye Piping Industries Co.,Ltd. ?? ???? ????? ????? ????? ?????? ???? ??????? ????? ?? ?????????. ????? ???? ??????? ??? ?????? ??? ??? ?????? ??? ????? ??? ??????? ?????? ????????? ?? ???????? ??????. ?? ????? ?????? ????? ??? 300 ???? ??? ???? ????? ??? ??????? ?? ??????? ???????? ?????? ??????? ??? ????? ?? ???? ????? ??? ??????? ???????? ???????? ??????? ????? ??????? ?????? ??? ?? ????? ???? ??????? ??? ?????? ?????? ??????? ????? ???? ???? ?????. . ??? ??? ????? ?? ?????? ?????? ?? ??????? ??????? ?????? ????????? ????????? ??? ?? ????? ???? ??????? Wafer 300LBS ?????? ?????? ?? ?????? ????????? ??? ????? ??????? ????????? ?? ?????? ??? ????? ?????? ??????????????? ??????? ?????? ???????? ???????? ?????? ?????? (HVAC). . ?? ?????? ??????? ??????? ???????? ?????? ??????? ?????? ?? ?????? ?????? ??? ???? ?????? ?????. ????? Shijiazhuang Deye Piping Industries Co.,Ltd. ???????? ???????? ????? ?????? ???? ???? ????????? ??????