Dn1200 48 ???? ??? ?????? | ???? ?????? ?????? ???? ??????

?? ???? ??? ?????? ???????? Dn1200 48 ?????? ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ???? ???? ?????? ?????? ?????? ??????? ????? ?? ????????? ????????. ?? ????? ???? ??? ??????? ??? ???? ?????? ?????? ?? ???? ????????? ??? ???? ??????? ????? ??????? ???????? ??? ?? ????? ??? ?????? ????? ????? ?????? ????? ????? ???? ????? ????? ??????? ???????? ??? ????? ??????? ??????? ??????. ????? ???? ??? ?????? ???????? Dn1200 48 ???? ?????? ???? ????? ?? ???? ???????? ??? ???? ????? ????? ????????? ?? ???? ?????? ??????? ?????? ??? ?????? ????? ????????? ?? ????? ????????? ??? ?? ??? ????? ?????? ??????????????? ??????? ??????? ????? ?? ???. ????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ?????? ????? ?????? ???? ???????? ??????? ?????? ????????. ?? ?? ???? ??? ??????? Dn1200 48 ?????? ???????? ???????? ???????? ?????? ??