????? ???? ??????? DN600 ???? ?????? ??? ???????? - ?????? ???????

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