Guangdong Threenh Technology Co., Ltd. is a high-tech enterprise from Guangzhou China. We are also Shenzhen Threenh company with TILO. 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, printing and dyeing, food, medical, cosmetic, optical image test industries and the field of scientific research, school and laboratory. Our products are exported all around the world. We can provide customization service which has been well received by customers. 3nh adheres to the business philosophy of "people-oriented, customer first, technological innovation, sustainable development" to meet customers' demands continuously, to create value for customers and to achieve a win-win situation and common development.