O le a le Chromate Conversion Coating/Alodine/Chem Film?Taimi e faitau 3 minute Folasaga Chromate faʻaliliuga faʻafeiloaʻi e iloa foi o le alodine coating poʻo le Chem film, o se ituaiga o faʻaliliuga faʻaliliu e faʻaaogaina e pasivate alumini, i nisi tulaga uamea, zinc, cadmium, apamemea, siliva, titanium, magnesiu ...
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