Danyang Bo Na Optical Glasses Co., Ltd. is a Sino-foreign joint venture company located in Jiangsu, China. We have been a technical factory specializing in producing optical lenses for more than 10 years. We absorb senior technology engineer and management experience through cooperation with craft brothers abroad. Our equipment and skill are all from Korea. We can manufacture all kinds of lenses such as CR-39 (1.499), mid-index (1.56) and high-index (1.61), and also deal with 1.67 and ...