DANYANG GREEN VISION OPTICAL CO., LTD., Located in jiangsu province, danyang. Is one specialized is engaged in the resin lens primarily production factory, we have many years in the product deep processing of skilled technicians and a wealth of experience. We can ensure that your requirements of quality and yield. We have all kinds of lens. Such as 1.499, 1.56, 1.60, 1.67, Flat top, round top lens. 1.56 Photochromic single vision lens, and photochromic flat top lens, photochromic progressive lens and all kinds of RX lens.