The bottom material can be aluminum or iron, and the pattern is determined according to the design. If the product requires concave and convex lines, you can choose to press or silk screen etching, and then polish it. Electroplating, or color filling, and finally glue dispensing. After the glue is dispensed according to a certain proportion, use a glue dispensing machine or manually use a syringe. The injection surface will just be automatically smoothed out. If the product is placed flat, it must be adjusted to the level. It is best to dry it according to the glue product or dry it by itself. . .