What Is TR90? A B2B Buyer’s Guide to TR90 Eyewear Frames
What is TR90? It is a lightweight, nylon-based thermoplastic commonly used for flexible optical frames, sports eyewear and safety glasses. For wholesalers and eyewear brands, however, the material name alone is not enough. Two frames described as “TR90” can perform very differently because resin grade, frame thickness, hinge construction, injection settings and quality control all […]
