Changzhou Yiheng Optical Technology Co., Ltd. is located in the beautiful and well-developed city of Changzhou, standing in the economic center of the Yangtze River Delta, Yiheng Optics is a new industry and high-tech enterprise, in the field of high-end grating roller manufacturing and maintenance in the leading domestic level, compared with Japan and South Korea, product quality is more stable, better service, price is higher. Excellent, the company independently developed and manufactured 3D grating roller, long focus anti-bachelor, PS grating roller and other advanced technology, stable quality, compared with imported