... the only Chinese listed manufacturer in the optical lens industry. In 2009, according to Chinese customs ... vision, bifocal, progressive, photochromic(Grey, Brown), polarized(Grey, Brown and G-15), polycarbonate, tinted, RX lens(uncoated, hard ... 56, 1.60, 1.67, both in finished and semi-finished. At the same time, we have a leading ... .56 1.60 1.67 lens blanks 1.499 1.56 1.60 1.67 semi finished lens blanks