?????? ?????? NB ????? ?????? ?????? ??????? | ????? ??? ???????? ?????!

????? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ???? NB ???? ??????. ??????? ???? NB ????? ??? ??? ???? ???? ?? ????? ???????? ??? ????? ??????? ????????? ?????? ??????? ??? ?? ????? ???? NB ????? ??? ?????? ???? ???? ?? ???? ??????? ???????? ???????. ?? ?????? ???????? ???? ????? ?????? ????? ???? ???? ????? ??????? ??????. ???? ??????? ??????? ?????? ????? ???????? ????? ????? ?????? ?? ??????? ???????? ???????? ??? ???? ???? ???? NB ????? ??? ?????? ?????? ???????? ??? ?????? ?????????? ??????? ????????? ????????. ???? ??? ????????? ??????? ?? ??????? ?? ??????? ??? ???? NB ????? ??? ?? ???? ????? ?? ?????? ?? ???? ???????? ?? Shijiazhuang Deye Piping Industry Co., Ltd.? ??? ??????? ?????? ?????? ?? ?????? ?????? ????? ????? ??????. ??? ?????? ?? ?? ???? NB ????? ??? ??? ?????? ??????? ????? ????? ??????. ???? ??? ????? ?????? ?????? ??? ???? NB ????? ??? ???? ???? ?? ???? ????