???? ?????? 600WOG ???? ?????? ????? ???? ??????

?????? ??????? ??????? ??????? ???????? 600WOG? ???? ?? ?????? ??????? ?????? ???? Shijiazhuang Deye Piping Idndustrys Co., Ltd. ??? ?????? ???? ?????? ????? ?? ??????? ??????? ??? ???? ??????? ????? ????? ??????? ?????? ?? ????? ????????? ????????? ?? ????? ????? 600WOG? ??? ?????? ???????? ????? ??????? ????? ?? ????? ????? ??????? ??? ???? ???? ??? ?? ?????? ???????. ????? ?????? ????? ??? ?????? ?????? ??? ???? ??????? ????? ????? ?????? ?? ??????? ???????? ?????? ?????? ???????? 600WOG ?????? ???????? ?????? ?????? ?????????? ??????? ????? ???????? ????? ??. ???? ??????? ????? ?? ????? ?? ????? ?? ??????? ??????? ??? ??? ?????? ???? ????? ?????????? ????? ???????????? ?? ?? Shijiazhuang Deye Piping Idndustrys Co., Ltd. ?????? ???????? ???????? ?????? ??? ??????? ?????? ????? ?? ??????? ???? ????? ?????. ???? ??? ????? ?????? ?????? ?? ?????? ???????? 600WOG ????? ??? ???? ???? ?? ???? ???????