Circular 3D Glasses 1)Metal frame, 0.72mm TAC polarized lenses 2)Polarized efficiency ... 5% Circular 3D Glasses, Circular 3D Glasses1)Product structure:Metal frame,thickness 0.72mm TAC polarized lenses and have process ... to meet the sea,air,freight and other transport channels and a variety of demands for customs and operating ... :200,000PCS/dayActive 3D glasses:50,000PCS/day Metal frame 3D glasses