China plastic circular polarized 3D glasses cheap price 1.CE,EN71,RoHs certificate 2.eco-friendly ABS plastic ... lensesProportion: 1.2g/cu. CmMoulding constriction rate: 0.5-0.7%Moulding temperature: 230-320 degree. Higher stability, good causticity, anti ... ,RoHs,EN71Polarized efficiency99.99%single transmittanceabove 42%Samples timewithin 5-7 daysUsage3d TV(LG,Philips etc.),cinemas,3d computer game,3d ...