... UC HC HMC EMI avaliable Flat Top Bifocal Lens Index: 1.499 1.56 1.60 Diameter: 70/28 75/28 80/28 70 ... In 2009, according to Chinese customs statistics, we are No. 1 in terms of exporting lens quantity in China. We can ... including free form, HI-VEX lenses, with index of 1.499, 1.56, 1.60, 1.67, both in finished and semi-finished. At the ... our quality service to you. Flat Top Bifocal Lens 1.499 1.56 1.60