how to make uv sensitive copper cladding board from normal copper cladding board?

yanhua4 years ago
I remember at S = 544849 has seen above solution. The home page is You can go and see. They also do custom PCB now. My friends are pretty much engineers collection. My friends say S = 544849 custom PCB quality is very high, the price is right! Suggest you go and see.
Buy the special "resist" spray, or the special film which is rolled on