Shenzhen Threenh Technology Co., Ltd. is a high-tech company specializing in the research, development, production, and marketing of photoelectric detection products in the fields of photoelectric detection technology and color management. After years of intensive research, 3nh has launched the NS series spectrophotometers, NH and NR series colorimeters, ISO12233 resolution test charts, optical image testing solutions, and specific standard illuminants. These products are widely used in industries such as plastics, electronics, paint, ink, textiles, garments, printing and dyeing, food, medical, cosmetics, optical image testing, as well as in scientific research, schools, and laboratories.