1.2312是什么材料1.2312推廣價格
1.2312是啥呢原料認知1.2312現在價格行情1.2312手游資訊1.2312企業產品簡價1.2312催化物質性功能下降請見解釋:++++++++++++++++++是啥呢原料催化物質++++++++++++++++++1,,.2312原料號:1.2312EN鋼號:40CrMnMoS8-6履行標準單位:ENISO4957工貝鋼C0.35,,-0.45Si0.2-0.4Mn1.3-1.6Ni0.9,,-1.2Pmax?0.03Smax0.03Cr1.8-2.1Mo0.15-0.25及以上是重要性1....
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