"Secondary steel GI,EG, CR, HR. HDG, PPGI, CRNGO, steel sheet and coil”其中的“GI, EG,CR, HR, HDG, "Secondary steel GI,EG, CR, HR. HDG, PPGI, CRNGO, steel sheet and coil”其中的“GI, EG,CR, HR, HDG, PPGI, CRNGO”是什么意思?或者说代表了钢材方面的那种材质吗?急!... 2023-04-11 6 0