????? ????? ??????? ?????? Wnrf ????????

?? ????? WNRF (??? ?????? ???????) ?? ??? ???? ?? ??????? ????????? ?? ?????? ????? ?????? ??????????? ???????????????. ????? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ?????? ????? ?????? ?? ?????? WNRF ?????? ??????? ?????? ?? ??????? ????????? ?????? WNRF ?????? ??? ?????? ?? ???? ?????? ??? ??????? ????????? ???????? ??????? ?????? ?????? ???????? ??? ???? ????? ?????? ??????? ??????. ??? ?? ??????? ?????? ????? ??? ???? ??? ???????? ????????? ???????? ??????? ??? ?????? ?????? ??????? ?? ????? ????????? ??? ???? ????? ????? ??????? ??????? WNRF ?????? ??? ?????? ???????? ?????? ??? ???????? ??? ???? ??????? ?????? ?? ??????. . ??? ?????? ?????? ?????? ??????? ??? ?????? ????????? ??????? ????????. ???????? ??? ???? ?????? ????? ????? ?????? WNRF ????? ????? ???????? ??????? ???????? ????? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ?????? ?? ?????? ?????? ????? ????? ??????? ??? ?????? ?????? ?????? ????? ???????? ???????? ?????? ??