Yiyang is a high-tech enterprise specializing in the processing, sales and service of optical components. Mainly engaged in processing and coating products with infrared optics and crystal materials, including ZnSe, ZnS, Ge, Si, chalcogenide glass, etc. The products are mainly used in various power lasers, medical beauty, infrared thermal imaging of household cars, urban security and other industries. The company's business covers many overseas countries.