Specifications

1) Material:NK-55
2) Nd=1.499
3) Dia: 70/75mm
4) Corridor: Short & Regular

1) Product: optical lens/lenses (Progressive lenses)

2) Abbe value: 38

3) Specific gravity: 1.28

4) High scratch resistance

5) 35% thinner than CR-39 lens

6) HMC+EMI coating and Uv protection

7) Tintable to various fashionable colors

8) Products are passed the high test of CE and ISO

9) Semi-finished or finished are available

10) Package: white envelopes or as customers' requirement