1.56 Photochromic lens Grey & Brown Abbe Value: 38 Finshed & Semi Finished Single vision, bficocal, progressive Shanghai ... world-known optical companies.We produce single vision, bifocal, progressive, photochromic lens(Grey, Brown), polarized(Grey, Brown ... lens(uncoated, hard coated, HMC, EMI) including free form, HI-VEX lenses, with index of 1.499, 1.56, 1.60, 1.67, both in finished and semi-finished ...