Copper foil is a cathodic electrolytic material, a thin, continuous metal foil deposited on the substrate of the circuit board, which serves as the conductor of the PCB. It is easy to adhere to the insulating layer, accept the printed protective layer, and form a circuit pattern after corrosion.
Copper foil is made of copper and other metals in a certain proportion. There are two types of copper foil: 90% foil and 88% foil, which means the copper content is 90% and 88%, respectively. The size is 16*16cm. Copper foil is the most widely used decorative material, such as hotels, temple Buddha statues, gold-lettered signs, ceramic tile mosaics, handicrafts, etc.
