Gold and silver protecting agent
★Use and characteristics
1. It can protect the coating of gold and silver and other precious metal coating, delaying the change of color.
2. It can protect cupronickel tin coating, it’s not easy to change color..
3 It can protect the bronze parts after passivation, make it not easy to change the color.
★Solution composition and operating conditions
1.Gold and silver protecting agent 1-2 copies
Tap water 100 copies
2 product catalog: Gold and silver protective agent