We're Zhenjiang Xieliang Optical Co.,LTD. which is located in Situ Town, Danyang City Jiangsu Province China, our company can produce all kinds of optical lenses(CR-39 ,1.56 & 1.523, 1.70 glass lenses and optical frames), our products are fully exported the oversea market , Pls check our website: www.asoptics.com