关注微信公众号查券更方便
现货无磁模具钢5Cr21 5Cr21Mn9Ni4N 0Cr18Mn18Ni2MoN 20Mn23AlV圆
2Cr16Ni2MoN 0Cr17Ni7A1圆钢1Cr18Ni9Ti 0Cr13Ni2Mn12Cu2不锈钢板