??? S32750 ???? ?????? ?????? ????????? ????????

??????????? ??? ???????? ???????? ????????. ????? ?????? ????? S32750 ???? ??????. ??????? ?????? ?? ??????? ??????? ????? ??????? S32750? ????? ???? ?????? ?????? ?????? ????. ???? ????? ?????? ??????? ????????? ?? ?????? ????? ?????? ??????????? ???????????????? ?????? ??????? S32750 ?????? ???????? ?????? ?????? ?????????? ???????? ????????. ??? ?? ??????? ???????? ?????? ???????? ???????? ????? ????????? ???????? ?? Shijiazhuang Deye Piping Industries Co.,Ltd.? ??? ??????? ?????? ?????? ?? ?????? ?????? ????? ????? ??????. ???? ???? ??????? ????? ??? ????? ??????? ?????? ?? ?? ??????? S32750 ???? ???? ?????? ??????? ???? ??? ?? ???? ??? ????? S32750 ?????? ???? ?? ??????? ??????????? ????? ?????? ?? Shijiazhuang Deye Piping Industries Co.,Ltd. ?????? ?????? ????? ???????. ???? ??? ????? ?????? ?????? ?? ??????? S32750 ???? ???? ?? ????? ???????