Widely used: often used in paint, cloth, printing, coating, metal processing plastic plastics, stone, decorative materials and other industries Professional spectral reflectance curve display: according to the reflectance curve to determine the sample hue, saturation, brightness, etc. to provide help for color matching, to avoid heterochromatic phenomenon Can test a variety of color indicators: widely used to test LabLChLuvCIE whiteness yellowness and other color indicators