Cr-39 1.499 bifocal / progressive semi-finished lenses

Great optics is a modernized enterprise specializing in developing,manufacturing and selling resin lenses.we are one of the major lenses manufacturers in china, with an annual output of over 10 million pairs of high quality lenses.the indexes of the lenses are: 1.499, 1.56, 1.61, and mineral white 1.523(1.71 and 1.8 hi-index lens) optical lens,mainly including harded coated lenses and harded multi-coated lenses in single vision , minus cylinder, plus cylinder, round top bifocal and top bifoca