Circular 3D Glasses 1)Metal frame, 0.72mm TAC polarized lenses 2)Polarized efficiency 99.7%, ... 43.5% Circular 3D Glasses, Circular 3D Glasses1)Product structure:Metal frame,thickness 0.72mm TAC polarized lenses and have process of ... 3D glasses:200,000PCS/dayActive 3D glasses:50,000PCS/day Metal frame 3D glasses