Wan Xin. Simbo's lenses are all new. Wanxin Optical Glasses Co., Ltd. is one of the largest production bases of CR-39 resin lenses in Asia. Xinbo lenses are supplied by Wanxin, which is a key enterprise specializing in the production of glasses in China and the largest production base of CR-39 resin lenses in China. China glasses manufacturing industry won the well-known trademark of China. Wanxin Company rose in the early 1990s, which greatly promoted the development of China glasses industry and made great contributions to the development of China glasses.