We are a Leader Optical Producer from China. We have the Follows Production: 1) Photochromic Lens (General 7). 2) Cr39 & 1.56 & 1.61 & 1.67 Single Vision & Bifocal & Progressive Lens. 3) 1.588 Single Vision Lens and Bifocal Lens. 4) Super-Flex Single Ision & Bifocal & Progressive Lens. 5) Polycarbonate Lens 6) Rx and Freeform Lens. 7) all kinds of Semi-Finished Lens for Sv & Bifocal & Progressive Lens. 8) Blue Block Lens; Cnoptimal.Com Email: [email protected] Whatsapp:+8613952875360 ...