1.56 Photochromic Lens Grey G-15 Brown finished and S/F single vision ... Shanghai Conant Optics is the only Chinese listed company. In 2009, according to Chinese customs statistics, we are No. 1 ... companies.We produce single vision, bifocal, progressive, photochromic(Grey, Brown), polarized(Grey, Brown and G-15), polycarbonate, tinted, RX lens ... 56 Photochromic Lens Photochromic Lens UC HC HMC Grey Brown