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How to maintain sunglasses: 1. If the lens has stains, grease or fingerprints, use the soft cotton cloth in the special sunglasses accessories to wipe the dust or dirt on the lens. Never use nails or products with chemical ingredients to remove spots on the lens. 2. It is forbidden to keep in water or soak in water for a long time and place it in a fixed place to be exposed to the sun; it is forbidden to place it near electricity or metal for a long time. 3. It is also easy to deform the frame when taking the glasses with one hand. Characteristics of sunglasses 1.Sunglasses are a kind of glasses that can be used not only to play cool, but also to use its shading properties to make you look at everything on the surface. At the same time, it is also a kind of glasses that can block the sun`s rays. Sunglasses are also called sunglasses, which are "labor insurance" products to protect the eyes under strong light. Wearing this kind of lens can block ultraviolet and infrared rays. At the same time, the color of the external environment does not change, only the light intensity changes, as if it is cloudy, and it feels cool and comfortable. 2.Strong sunlight contains a lot of ultraviolet and infrared rays, which may damage the cornea, lens, and even the fundus of the eyes. Wearing a pair of sunglasses can block or absorb part of the light and reduce the irritation to the eyes. In recent years, due to the importance of health, many people like to wear sunglasses when going out in the hot summer to reduce the stimulation of the sun. Some people also like to use them as decorations. Quality NYLON Lens lenses have 5 times higher stress crack resistance and impact resistance than ordinary PC lenses. They have the advantages of super toughness, wear resistance and corrosion resistance. The protection level is improved in all directions. Protection At least 8 layers of REVO coating can effectively isolate ultraviolet rays and effectively isolate radiation damage; eliminate glare, restore true colors, and give you a high-definition visual experience; soft silicone nose pads outside the metal bridge of the nose, skin-friendly and comfortable, without fear of imprints. Exquisite Laser craftsmanship creates exquisite details, high details, and quality assurance; the finely polished frame and refined metal merge to create a new style of thinking. Highpressure manufacturing metal parts, precision laser welding parts, clear and accurate, perfect connection in every place, fit the human body, create a comfortable experience, every detail shows its ultimate pursuit of quality, only for different groups of people can have a pair Different sunglasses. --> --> -->