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