the base material can be aluminum or iron, and the pattern depends on the design. If the product needs a sense of concave and convex lines, you can choose pressing or silk-screen etching and then polishing. Electroplating, or color filling, and finally glue dripping. After the glue dripping is matched according to a certain proportion, use a glue dripping machine or manually use a syringe, and the injected surface will just automatically smooth out. The flat product will not be able to do until it is leveled. It is best to dry or self-dry according to the dripping product. . .