The basic concept of the metal etching

Generally, metal etching, also known as photochemical metal etching, refers to removing the protective film of the metal etching area after plate making and development by exposure, and contacting the chemical solution during metal etching to dissolve corrosion and form concave convex or hollow forming effect. The metal etching was first used to manufacture copper plate, zinc plate and other printing concave convex plates. It is also widely used in the processing of weight reduction instrument panels, nameplates and thin workpieces that are difficult to be processed by traditional processing methods; After continuous improvement and development of process equipment, the metal etching can also be used for the processing of precision metal etching products of electronic sheet parts in aviation, machinery and chemical industries. Especially in semiconductor manufacturing process, metal etching is an indispensable technology.(metal etching)