Completely nickel-free and fluorine-free additive, compounded by unique sealing salt, stabilizer, buffer, accelerator and anti-washing agent;
No need to be heated, the sealing speed at room temperature reaches 1.5-2.5μm/min, which greatly improves the production efficiency;
Excellent sealing effect, the oxide film within 28μm in the phosphoric chromic acid test with nitric acid pre-impregnation (GB/T8753.2-2005) weight loss ≤ 23mg/dm2;
It has strong "powder frost" inhibition effect, insensitive to impurity ions, and has strong buffering ability to acid and alkali;
Silver-white and electrolytic coloring aluminum materials, after closure still maintain the original color.
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