• 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...

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  • 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, sa...

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  • 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 Standa...

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  • 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. ...

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  • CIE Standard Observers

    In the visual observing situation, the observer is the human eye that receives the light reflected from or transmitted through an object, and the brain which pe...

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