After the product is put on the market, the name plate is fixed on the product to provide users with information such as trademark identification, brand differentiation, product parameters and so on. The name plate, also known as the label, is mainly used to record some technical data of the manufacturer and the rated working condition, so as to provide correct use without damaging the equipment. The materials for making nameplates are metallic and non-metallic: metallic materials include zinc alloy, copper, iron, aluminum, stainless steel, etc., but most of them are made of aluminum, because the processed nameplates are relatively high-grade, durable and rust free. Non metallic materials include plastic, acrylic organic board, PVC, PC, paper, etc.