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Selective processing

Methods of local protection:

1. Coating with insulating varnish for protection: This method is suitable for a wide temperature range, but its alkali resistance is relatively poor; avoid prolonged immersion in alkaline solutions.

2. Adhesive Protection: By applying multiple layers of protective adhesive to the part, the corresponding areas are shielded from anodizing; however, this method is difficult to remove.

3. Wax coating protection: Use at temperatures below 40°C; otherwise, the wax layer may melt easily.

4. Use dedicated fixtures for protection: These specialized fixtures are made from materials such as aluminum, polyvinyl chloride (PVC), and nylon; ensure their sealing performance is adequate.

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Selective Processing 1

Chrome-free passivation

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