Cr 39 bifocal lens

Hi, we are very professional and formal manufacturer in China. our main products include CR-39 uncoated & HMC, 1.56 uncoated & HMC, 1.56 photochromic gray or brown, progres...  view detail

Material: CR-39 PPG Refraction index Nd=1.499 Abbe Value: 58 Specific gravity: 1.32 High scratch resistance New design, slim and thin HC, HMC coating available Tinable to va...  view detail

we are a professional optical manufactory of optical our factory produce CR 39 , 1.56, 1.61 single vision and bifocal lens and progressive lens , white and photochromic lens , 1....  view detail

High index 1.67 asp lens Index (ND): 1.67 Abbe value (vd): 32 Specific gravity (p): 1.35 Material: Mr7 UV400 aspheric Avilable range  view detail