... Signs, Name plates, Metal craft and etc. Chemical Etching Machine(Spray) How It Works:1.Chemical etching, by exposure platemaking, after ... of etched area or screen printing platemaking, into the chemical solution to dissolve erosion machining.2.This technology extends the ... decoration plates, Signs, Name plates, Stencils gobos, Metal crafts and so on.2.Materials can be Steel, Stainless steel, ...