Glass cup refers to a glass cup, usually made of high-borosilicate glass, which is fired at a temperature of more than 600 degrees. It is a new type of environmentally-friendly tea cup, which is increasingly favored by people. The glass is divided into double-layer glass and single-layer glass. The production process is different. The double-layer is mainly adapted to the needs of the advertising cup. The company's logo can be printed on the inner layer for promotional gifts or gifts. Outstanding.