Trivalent Black Passivation
1. Free of hexavalent chromium.
2. Wide range of operating conditions, the plating bath is easy to operate and manage.
3. Suitable for barrel plating and rack plating, can be obtained uniform corrosion resistance black passivation film.
4. NSS time 72-120 hours.
FF-5962 sealing agent for zinc and zinc alloy passivation, can greatly improve the corrosion resistance of the passivation film.