Jiangsu Green Stone Optical Co., Ltd. has more than 65,000 square meters of production base, with more than 200 employees. We are a professional specializing in the production of the CR-39 lens, including myopia and reading lenses, such as sphere, cylinder, multi-cylinder, round-top bifocal, flat-top bifocal, progressive, tint, photochromic, polarizer with uc, hc, hmc, and emi coating. And now,... See More