Tsis txhob ua pessimistic dhau lawm!Kev lag luam steel tseem nyob ntawm txoj kev txhim kho Niaj hnub no, kev lag luam steel feem ntau tau nce me ntsis.Qhov nce ntawm kauv coils yog ntau dua, thiab txias-dov, nruab nrab phaj, sawb hlau, profiles, thiab qee cov kav dej tag nrho muaj qhov nce ntawm 10-30 yuan.Tus nqi tag nrho le...
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