... anodizing. Divided by the electrolyte: sulfuric acid, oxalic acid, chromic acid, mixed acid and organic acid-based solution Sulfur salicylic natural colored anodizing. ... and automation; sulfate than on the person against chromic acid in small, widely source , and low prices. Over ... aluminum, and their surface treatment production lines and are based on this approach. Anodic oxide film structure, the ...