Eyeglasses are mainly divided into two parts, the first is the frame, the second is the lens, and the third is the processing About frames The difference between the frame is mainly the difference in the material. Generally, the material of the frame is divided into five types: plastic, wood, alloy, plate, and titanium frame. Among them, the plate and titanium frame are the most expensive, and of course, the corresponding comfort is also The highest, in terms of elasticity and weight, far outperforming the first three materials. tortoise glasses frames lens price The price orientation of the lens is determined by three factors, the first index of refraction, the higher the index of refraction, the thinner and lighter the lens, the second additional performance, whether the lens is anti-blue light, etc. Such properties will affect the price of the lens and the third lens brand. Lenses in different shapes and colors look stylish. cat eye glasses lens Processing technology The third is pr
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