(28.56701.236.7261.7284.7397)
有色金属-有色金属（non-ferrous metal），狭义的有色金属又称非铁金属，是铁、锰、铬以外的所有金属的统称。广义的有色金属还包括有色合金。有色合金是以一种有色金属为基体（通常大于50%），加入一种或-yousejinshu</br> generated by yvsou girl
group status
👤 group joined: 0 ⏳ group pending: 0 🚫 group blocked: 0
ALL
> Institution and enterprise > company > Enterprise classification > > >
(28.56701.236.7261.7284.7397)
> Institution and enterprise > company > Enterprise classification > > >
(28.56701.236.7261.7284.7397)