???? ??????? En558 S13 ???? ??????: ???? ??? ?????? ??????? ???????

?? ???? ??????? En558 S13 ?????? ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ???? ???? ?????? ???? ??????? ????? ?? ????????? ????????. ????? ??? ?????? ?????? ??? ?????? ??? ????? ??????? ??? ?? ???? ?????? ??????? ??? ???? ????? ???????? ?? ?????? ???????? ????????? ??? ???? ??????? ?? ??????? ????????. ?? ????? ?????? ????? ????? ?????? ????? ??????? ??????? ??????? ?? ?? ??????? ??????? ??? ?? ????? ???? ??????? En558 S13 ????? ???? ????? ????? ?????? ??? ???? ?????? ?? ?????? ?????? ??????. ???????? ??? ???? ??? ????? ?? ?????? ?????? ?? ??????? ??????? ????? ?????? ??????? ??????? ???????. ???? ????? ?????? ?????? ???????? ??? ???? ??????? En558 S13 ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ??????? ??????? ??? ?????????????? ??????????? ??????? ??????. ??? ???? ???? ?????? ?? ??? ??????? ???????? ????????? ?????? ???????