After years of dedicated research, 3nh has successively launched the NH&NR series colorimeter, YS&NS series spectrophotometer, ISO12233 resolution test map, optical image test solution, and standard color lightbox. Our products are widely used in industries such as plastics, electronics, coatings, inks, textiles, clothing, printing and dyeing, food, medical, cosmetics, optical image detection, as well as scientific research, schools, and laboratories. Our products are exported to various parts of the world.