1.56 HMC Single Vision optical lens factory(CE,FDA) 1)Refractive index:1.56 2)Diametre: ... 70/72mm 3)UC,HC,HMC 1.56 HMC Single Vision optical lens factory(CE,FDA) Refractive index:1.56Material:NK-55Abbe ... carton can include aroud 500 pairs lens,20KG/CARTON) We produce single vision lens, bifocal lens, progressive lens, photochromic lens(Grey, Brown),with index of 1 ...