Shenzhen 3nh Technology Co., Ltd. is a high-tech enterprise. We research, develop, produce and market photoelectric detection products in photoelectric detection technology field and color management field. After years of intensice research, 3nh has launched NS series spectrophotometer and NH, NR series colorimeter, ISO12233 resolution test chart, optical image test solution and specific standard illuminant which are widely used in plastic, electronic, paint, ink, textile, garment, printing and dyeing, food, medical, cosmetic, optical image test industries and the field of scientific research, ....