Man has new recognition to the light with the development of science and technology. The light brings us not only brings us brightness and warm but also misfortune and disaste. The light radiation can damage the cornea and iris to restrain the retinal photoreceptor cells, cause eyestrain and vision loss. The illness of keratitis and conjunctivitis, cataract, astigmatism, glaucoma, presbyopia etc is connected with the light radiation. The light radiation can damage the skin to accelerate skin aging or even skin cancer. Light glare also can interfere with brain central nervous to damage people's physical and mental health. It often makes people dizzy, headache, nausea, loss of appetite, neurasthenia, listless, spirit is depressed, loss of libido, impotence, irregular periods, and even endanger the human family, the continuation of offspring. Light glare can make the person transient visual loss.

Cars as the outdoor tool of people, which often bear light glare for long time. The visual environment and eyes are damaged by the outside glare when we drive against the light. According to authoritative department survey, nearly 40% of drives have eye disease due to they often suffer strong sunlight, the refraction of light and nighttime urban artificial lighting and the headlight from opposite cars during driving. According to statistics, the traffic accidents caused by fatigue is about 20% of the total number of accidents, is over 40% of the heavy traffic accidents. It is necessary for man to take measures to prevent glare. However we haven’t found any good effective methods in the aspect of cars’ anti-glare for one century. The present sun visors used in all kinds of cars all over the world not only can’t prevent light damage but also bring fatigue and extra illness to drivers. People are urgently eager to replace the traditional sun visor with advanced, practical and humanized product, because the traditional sun visors can’t meet the need of cars’ anti-glare. The emerge of ZGBOX is based on the cars’ light circumstance, tens of thousands of drivers anti-glare demands. Proof by facts, ZGBOX has solved the problems of cars’ anti-glare and is popular with many customers. The time of “one car must have one “ZGBOX” has come.