The component trade behind frame making: spring hinges, screws, nose pads, temple tips, core wires, plaques and decorative parts. Italy's Cadore and Treviso clusters and China's Wenzhou supply most of the world's frame makers.
Varieties (worldwide)
Spring hingesScrewless and flex hingesSilicone nose padsTitanium nose pad armsAcetate temple tipsMetal core wires for acetate templesEyewear screws and washersDecorative metal parts and plaques