????? ????? ???? ??? - ???? ?? ?????? ????? ?????? ?????? ?????
?????? ?????? 1/2 ???? ????? ???? Shijiazhuang Deye Piping Industries Co.,Ltd. ?? ???? ???? ?????? ?????? ?????? ?? ???? ??????? ?? ??????? ?? ????????? ???????? ????????. ?? ????? ??? ?????? ?????? ???? 1/2? ??? ????? ??????? ???????? ???????? ?????? ?????? ??????? ?????? ????? ??? ????? ?? ???? ????? ????? ?????? ??? ????? ?????? ??????? ?????? ??????? ???????. ????? ?????? ??? ???? ???? ?????? ???? ????? ???????? ??? ????? ???? ???? ???????? ????? ??????? ??????? ???? ????? 1/2 ????? ??????? ????? ?? ????????? ??? ?? ??? ????? ?????? ???????. ?????? ????????? ??????????? ????? ?? ???. ????? ???? ?????? ?????? ??????? ???????? ??? ????? ???? ????? ??????????? ????? ???????? ???? ?????? ?? ?????????? ???? ????? ???? ?????? ?????? ???????? ??? ?????? ?????? 1/2 ?? Shijiazhuang Deye Piping Industries Co.,Ltd. ?? ?????? ?????? ?????? ?? ?????? ?? ??????? ????????