... HC/T, HMC+EMI, SHMC As the largest lens manufacturer in China, Shanghai Conant Optics is the ... many world-known optical companies.We produce single vision, bifocal, progressive, photochromic(Grey, Brown), polarized(Grey, ... Brown and G-15), polycarbonate, tinted, RX lens(uncoated, hard coated, HMC, EMI, Superhydro) including free ... our quality service to you. CR-39 Lens(1.499 resin ...