Lisun Electronics Inc. is a global company that produces colorimeters and light testing instruments. It has offices in Hong Kong, Shanghai, Los Angeles, and a factory in Hangzhou, China. The document provides information on Lisun's colorimeter product line, including models CD-200, CD-300, CD-310, and CD-320. It describes the features such as multiple color space display, ergonomic design, data storage capacity, and technical specifications of each model. The colorimeters are suitable for color testing in industries like plastics, paint, printing, food, textiles, and automotive.