???? ???? ???? DN600 ????????? ???????? | ?????? ????? ??????

??????????? ??? ???????? ???????? ????????. ???? ?????? ????? DN600 ????? ?????? ????? ?????? ????? ????? ??????? ?? ??????? ?? ????? ???????? ????????. ??? ????? ??? ???????? ??????? ???????? ???? ?????? ??? ??????? ??????? ????? ???????? ???????? ?????? ???????? ??? ???? ??????? ??????? ??????? ???? DN600? ??? ??? ???????? ??????? ?????? ????????? ???????? ????? ?????? ??? ?????? ?????? ?????? ??????? ????????? ??????. ??? ?? ??????? ?????? ???????? ??????? ?????? ????????? ??? ?????? ?????? ?????? ?????? ???????? ??? ?? ??? ????? ?????? ??????????????? ?????? ??????? ????????? ??????? DN600 ?? Shijiazhuang Deye Piping Industries Co.,Ltd. ?????? ?? ????? ?????? ?????? ??? ??? ????? ??????? ???????? ??? ???? ??????? ?? ??????? ???????? ?? ????? ???????? ????????. ??? ????? ????? ?????? ?????? ??? ??????? ????? ??????? ???????? ??????? ???????? ???????? ???? ???? ?????? ?? ????? ??????? ????? ??????? ??????? ?? ??????? ??????. ????? Shijiazhuang Deye Piping Industries Co.,Ltd. ?????? ??? ?????? ????? DN600 ????? ?????? ????? ???????? ????? ?????? ????????? ????????