| http://www.w3.org/ns/prov#value | - Therefore, the choice of sunglasses lens material is a big difference compared to ordinary vision correction glasses.In the process of manufacturing lenses, the color is inside the lens, a layer of light-absorbing molecule plated in pure polycarbonate surface, is also a dyeing method.Optical memory nylon lenses, excellent chemical resistance, suitable for plate frame, ultra-light weight, easy to l
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