A glaze made of glass powder, borax and oxides containing lead and tin, etc., is used to coat the surface of copper or silver, and can play a role in rust prevention and decoration. Non-toxic enamel products are made of gold, silver, copper and other metals. Enamel glaze made of timely, feldspar, borax and other minerals is finely ground into powder pigment. The painted part (commonly known as the lighting part) on the metal tire is finely hand-painted with a pre-designed picture, and then repeatedly sintered at 800 degrees in a high-temperature kiln. Finally, a beautiful enamel work of art was made. Enamel is very bright in color, with gem-like luster and texture, corrosion resistance, wear resistance, high temperature resistance, waterproof and moisture-proof, hard and solid, not aging and not deteriorating, and its color remains unchanged after thousands of years. It can be said that enamel is the most expressive in jewelry, with excellent colors and light, never fading and lasting forever! Both practical and value-preserving.