????? ??? ???? ?????? ?? ????? - ???? ??????? ????????

??? ???? ???? ???????? ???? ???????? ??? Super Duplex ???? ??????. ???? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ?????? ?? ??? Super Duplex ??????? ?????? ?????? ????? ?????? ???? ?????????. ??? ????? ??????? ???????? ???? ????? ??????? ??????? ????? Super Duplex? ??? ?????? ?????? ????????? ?? ??????? ????????? ??? ???????? ?????????? ?????? ?????? ?????????? ???????. ????? ????? Super Duplex ?? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ???????? ?????? ?????? ?????????? ???????? ????????. ?? ??????? ???? ????? ?????? ?????? ????? ??? ?? ?????? ??????. ?? ??????? ???????? ??????? ???? ?????? ???? ????? Super Duplex ?????? ??? ?????? ??????? ?? ????? ???????? ????? ??? ?? ?? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ????? Super Duplex ?? ?????? ?????? ???? ???? ?????? ?????? ??????? ??????? ?????? ???????. ???? ??? ????? ?????? ?????? ?? ????? Super Duplex ????? ?????? ????? ???????? ??????