I-oksidi emnyama okanye i-blackening yinguquko yokuguqula izinto ze-ferrous, insimbi engenasici, i-alloys yobhedu kunye nobhedu, i-zinc, isinyithi esingumgubo, kunye ne-solder yesilivere.[1]Isetyenziselwa ukongeza ukunganyangeki komhlwa, ukubonakala, kunye nokunciphisa ukukhanya okukhanyayo.[2]Ukufezekisa eyona corrosion res...
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