???? ????? DN200 ???? ?????? ?????? ?? ?????? ??????

???? ??????? DN200 ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ???? ???? ?????? ?????? ???? ??????? ????? ?? ????????? ????????. ???? 200 ??? ??? ?????? ???? ??? ??????? ?? ??????? ??? ????? ?????? ????? ??????? ???????? ??? ????? ??????? ????????? ?? ??????? ??????. ?? ????? ???? ??????? DN200 ?? ???? ????? ????? ???? ??????? ??????? ?????? ???? ????? ?????. ???? ????. ????? ?????? ???? ????? ??????? ???? ?????? ????? ?? ?????? ????? ?????? ?? ?????? ?????? ??? ???? ????? ?????? ???? ???. ?? ????? ?????? ?????? ??????? ????????? ?? ????? ???? ???? ?????????. ?? ?????? ?????? ??????? ?????? ????? ?????? ?????? ?????? ?? ???? ????? ??????? ?????? ???????? ?????? ?? ????? ????????? ??? ?? ??? ?????????? ??????????????? ?????? ?????? ??????? ??????? ???? ?? ???? Shijiazhuang Deye Piping Industries Co. ., Ltd.? ??????? ???? ???????? ??? ???? ??????? DN200 ???? ???? ???????? ???? ????????? ???????? ???????? ?????? ??