Kedu ihe mkpuchi mkpuchi chromate/Alodine/Chem?Oge iji gụọ nkeji 3 Okwu Mmalite Ihe mkpuchi mgbanwe Chromate makwaara dị ka mkpuchi alodine ma ọ bụ ihe nkiri Chem, ọ bụ ụdị mkpuchi ngbanwe a na-eji na-agafe aluminom, n'ọnọdụ ụfọdụ ígwè, zinc, cadmium, ọla kọpa, ọlaọcha, titanium, magnesiu...
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