1. Colorimeter is widely used in different industries such as plastic cement, printing, paint, weaving and dyeing. 2. The use of high‑quality sensors and processors ensures the accuracy of optical signal transmission and the stability of electrical signals. 3. The device could store 10 standard sample groups and every sample group could store 100 sample data. 4. It could connect with micro printer for testing report printing anywhere. 5. It measures the sample color data L*a*b*, L*c*h*, color difference ΔE and ΔLab according to CIE color space. 6. It could be widely used for testing the color of difference materials such as dental, plastic, fruit, textile, car, etc.