Index : 1.59 Polycarbonate Lens Abbe Value : 31 Gravity (g/cm3) : 1. ... , HC/T, HMC+EMI, SHMC As the largest lens manufacturer in China, Shanghai Conant Optics is the only Chinese ... , photochromic(Grey, Brown), polarized(Grey, Brown and G-15), polycarbonate lens, tinted, (uncoated, hard coated, HMC, EMI, Super Hydrophobic) ... our quality service to you. 1.59 Polycarbonate Lens HC HMC finished S/F