宁波市鄞州速发金属材料有限公司

宁波速发金属专营易切削钢1215 12l14 1144,球墨铸铁QT400,QT450,QT500,QT600,灰口铸铁HT200,HT250等高强度铸铁圆棒板材，弹簧钢65Mn，60Si2Mn，T8,SK5,SK7等多种合金钢带，欢迎来电0574-88055523