Zitsulo za kaboni zakhala chinthu chofunikira kwambiri m'mafakitale osiyanasiyana. Ndi katundu wawo wapamwamba komanso ntchito zambiri, amagwira ntchito yofunika kwambiri pantchito yopanga. Tifufuza za ubwino, ntchito, ndi mitundu ya mapepala a carbon steel, kuphatikizapo ...
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