... Optics is the only Chinese listed manufacturer in the optical lens industry. In 2009, according to Chinese customs statistics, ... , bifocal, progressive, photochromic(Grey, Brown), polarized(Grey, Brown and G-15), polycarbonate, tinted, RX lens(uncoated, hard coated, HMC, EMI ... , Superhydro) including free form, HI-VEX lenses, with index of 1.499, 1.56, 1.60, 1. ...