???? ??????? DN200 ???? ??? ????? CE ?? ??????? ??????? ???????

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