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Speaker & Sound Box
1) ND: 1.56 2) 35% thinner than CR-39 lens slim and thin 3) Hi-impact resistance, hi-scratch resistance 4) ABBE value: 38 5) HMC and HMC+EMI coating available in greenish and bluish colors; va
optical lens , organic lens , lenses ,
Features: 1) ND: 1.60Hi-index 2) 45% thinner than CR-39 lens, hi-scratch resistance 3) Hi-impact resistance 4) Diameter: 70mm, 72mm only for minus powers 5) Range of powers: a) SPH: Plano T
optical lens , ophthalmic lens , organic lens ,
