| our company specializes in producing UV-400 photochromic lens(grey,brown) such as:sphere,cylinder,round-top bifocal,flat-top bifocal,progressive,semi-finished.
we also produce 1.499 index CR-39 resin lens,such as:sphere,cylinder,round-top bifocal,flat-top bifocal,invisible lens,progressive lens,UC,HC,HMC,etc. |