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 intensive research, 3nh launched NH series colorimeter with high precision and high stability, high definition 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, school and laboratory. Our products are exported around the world. We can provide customization service which has been well received by customers.