By adopting various technologies such as concave convex molding, frosted oil polishing, laser transfer anti-counterfeiting imprinting, and fully automatic image inspection, the product has strong three-dimensional sense, wear resistance, scratch resistance, good waterproof performance, and is difficult to counterfeit, with strong anti-counterfeiting function. The product has innovative materials and processes, and the related technology has obtained one utility model patent (patent number CN201620471798.2), which is at the advanced level of similar products in China.