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Pre-treatment

Degreasing, pickling, ultrasonic cleaning

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About Pre-treatment

Rack marks and contact points after pre-treatment: how do you reduce them?

Ultrasonic cleaning before plating: frequency, temperature and time?

How do you control carry-over contamination between alkaline and acid stages?

Bright dip or nitric dip after zinc plating: when do you use each?

What is your current degreasing sequence for zinc die-cast parts?