Xov xwm
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Dab tsi yog vim li cas rau blackening ntawm aluminium alloy nto?
Tom qab qhov saum npoo ntawm aluminium profile yog anodized, ib zaj duab xis tiv thaiv yuav raug tsim los thaiv huab cua, kom cov txhuas profile yuav tsis oxidized.Qhov no kuj yog ib qho ntawm cov laj thawj vim li cas ntau tus neeg siv khoom xaiv siv aluminium profiles, vim tias tsis tas yuav tsum tau pa ...Nyeem ntxiv