CANGNAN ST EYEWEAR FACTORY. established in 2012, is a FDA registered manufacturer of blue light blocking glasses, reading glasses and optical frames for many years. With a production plant area of 5, 000 square meters and 200 labors, we are a large manufacturer in the field of glasses in Wenzhou, China. Professional experience in the field, high quality and reasonable price make us enter into the worldwide market. Our main customers are from the European Union, USA, and Australia. Meanwhile, progress is being made in the market of East Asian countries, Africa and Middle East.