????? ??? 304L ????? ?????? ????????? ????????
??????????? ??? ???????? ???????? ????????. ???? ?????? ????? ?? ?????? 304L ????? ?????? ?????? ????????? ????????. ?????? 304L ?????? ?? ??????? ??????? ????? ???? ??????? ??? ???? ?????? ?????? ?????? ??????? ??? ?? ????? ??? ?????? ?????? ????? ????? ????? ?????? ?? ????? ????????? ??? ?????? ?????? ????????? ?? ?????? ??? ???????? ?????????? ?????? ??????. ? ????????. ????? ?????? 304L ?????? ?????? ??????? ??? ?????? ????????? ??????? ????????? ???? ????? ???????? ?????? ?????? ??????? ?????? ?? ?? ?????? 304L ?????? ??? ???? ???????? ?????????? ???????. ????? ?????? ??????? ?? ????????? ?????? ???? ????? ?????? ???? ??? ???????? ?? ?????? ?????? ???????? ???????? Trust Shijiazhuang Deye Piping Industries Co.,Ltd. ????? ???????? ??? 304L ?????? ??? ??????? ?????? ????????? ??????? ???? ?????? ?? ????????
