Specifications 1. Lens Color: Gray, Brown, 2. Diameter: 70/75mm, 3. 100% Blockage Of Harmful Uv Rays, 4. No Base Color 5. Change Quickly 6. Stable Color For Each Shipment 7. Slim, Thin Available Color, Grey & Brown Refraction Index Nd, 1.61&1.67 Diameter, 65mm / 70mm Color Changed Quickly High Scratch Resistance 35% Thinner Than Cr-39 Lens Semi-finished Lens Available Uc, Hc, Hmc, Emi, Uv 400 Can Be Used Equally Well Throughout The Year In All Climates Sample For Free But Freight Charge Will Be In Buyer's Account Imported Material (ppg), Keep Lens Not Yellow In Two Years Company Introduction Changxing optical glasses factory has established more than 10 years in danyang city jangsu province china. therefore,  our factory can provide better quality lenses with competitive price. our factory has two product lines to produce normal and function lenses which contain cr39 1.499 lenses,  1.56,  1.61,  1.67 high index lenses,  sunglasses lenses,  blocker blue lenses,  progressive lenses,  and photochromic lenses with more than 10, 000 pairs per day. Types Of Products  Cr-39, 1.499, Photochromic lens, 1.61/1.67 High Index Lens 1.56 Tinted Sunglasses Lenses, 1.56 middle index lenses , Semi-finished lenses Progressive Lenses, Blocker Blue Lenses, Uv400 Lenses 1) Standard White Envelopes For Free 2) Your Design With Your Logo, Need Extra Charge 3) Cartons: Standard Cartons: 50cm*42cm*38cm (every Carton Can Include Around 500 Pairs Lens, 21kg/ Per Carton)