... Single Vision optical lens factory(CE,FDA) Refractive index:1.56Material:NK-55Abbe Value:46Diametre:65/70mmCoating:Super Hydrophobic,HC ... ,Uv-protect,Anti-reflectionPackaging Detail:envelops packing(For choice): 1)standard white envelops 2)your design with your LOGO, ... progressive lens, photochromic lens(Grey, Brown),with index of 1.499, 1.56, 1.60, 1.67, both in finished and semi-finished,with best ...