Color difference contrast.QC detection: Detect the color difference between the sample color and the standard color, after setting the color difference E threshold (0.1-50 optional), APP can automatically judge whether the color difference is qualified or not Standard color addition: With the standard color addition function, colors can be retrieved from the color card library, which is convenient for color difference comparison with sample colors, without having to carry heavy color cards 6 color difference formulas: Built-in 6 color difference formulas to provide standards for color difference judgment for different industries Multiple standard electronic color cards: The color measurement room can quickly match the closest 3 color card numbers from multiple standard color card libraries, with an accuracy rate of up to 90%, and the collected colors can be restored through APP Store large amounts of color data: A large amount of color data can be stored in the mobile APP, collect the desired color any-time, anywhere and establish a personal color card library