Chen Feng optical glasses ***** specializes in producing 1.56 photochromic resin lens and CR-39hard resin lenses, such as single vision, high cylinder, round-top bifocal, flat-top bifocal, invisible, progressive, semi-finished, and 1.499index, 1.56inedx lenses, etc. Supported by complete specifications, great capacity, advanced equipment and leading technology, our products is welcomed both in domestic and international market, praised by customers, enjoys good reputatio