???? ??? ?????? Ggg40: ?????? ?????? ?????? ????????? ????????

????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ???? ?????? Ggg40? ?????? ????? ????? ?? ?? ????? ???????? ????????. ???? ????? ???? ?????? ??? ????? ?? ???? ???? ?????? Ggg40? ??? ???? ??????? ???? ????? ?? ????????? ???????? ??????? ?????? ???? ????? Ggg40 ?????? ??? ??? ????? ??????? ????? ????????? ??????? ??????? ??? ????? ??????? ????????? ?? ????? ????? ?????? ????? ??????. ???? ?????? ????? ??????????? ???????? ?????? ?? ??????? ??? ???? ??????? ?? ??????? ???????? ????????? ???? ?????? ??????? ???????? ?????? ?????? ???????? ???? ???? ????? Ggg40 ????? ??? ??????? ?????? ???????? ????? ?????? ?????? ???? ???? ????? ?????? ??????? ?? ?? ????????. ??? ???? ????? ??????? ??? ?????? ??????? ???????? ??????????? ????? ??????? ????? ?? ???? ?? Shijiazhuang Deye Piping Industries Co., Ltd.? ??? ??????? ?????? ?????? ?????? ???? ???? ?????? ?????? ??????????. ???? ??? ????? ?????? ?????? ?? ???? ????? Ggg40 ????? ??? ???? ???? ?? ???? ????? ???????? ????