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Declaration of 3nh & TILO Mail

Shenzhen 3NH (ThreeNH) Technology Co., Ltd. Shenzhen TILO Technology Co., Ltd., hereby declare we only use the domain name suffix enterprises email address (xxx@3nh.com and xxx@tilo.cn) to contact you.... More

3nh Products Have Got CE Certificate

CE-certification or CE Marking is a conformity marking consisting of the letters CE. The CE Marking applies to products regulated by certain European health, safety and environmental protection legislation. The CE Marking is obligatory for... More

Human Eyes to Distinguish Colors

The color difference unit, NBS, is derived from the unit of color difference formula which is established by Judd-Hunter. In 1939, the American Bureau of Standards adopts this color difference formula and calculates the color difference acc... More

The Color of Objects

There are three major elements to perceive color: light, object and observer. Any change of these three elements will influence the observers color perception. When the light source and the observer dont change, then the object will determi... More