Mabedi a granite amawakonda kwambiri popanga zida za semiconductor chifukwa cha zinthu zake zabwino kwambiri monga kukhazikika kwapamwamba, kuuma kwakukulu, kukulitsa kwamafuta ochepa, kunyowa kwabwino, komanso kukana kwambiri kuvala ndi ma abrasion.Amagwiritsidwa ntchito kwambiri ...
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