Since the cooperation between Suzhou Xinguo Optical Instrument Component Factory (before transformation) and Beijing Optical Instrument Factory in 1984, we have been committed to providing various optical components for national surveying and mapping instrument manufacturers. We are familiar with the optical systems and component composition, processing technology, and testing standards of electronic theodolites, leveling instruments, verticals, total stations, and other models.

The products include objective lenses, objective lens groups, eyepieces, eyepiece lens groups, focusing lenses, field lenses, right angle prisms, oblique prisms, Abbe prisms, ridge prisms, beam splitting prisms, window plates, reflectors, protective films, filters, dividers, and more. The stable product quality and actively cooperating service have received unanimous praise from customers.

Users include Japanese companies such as Nikon, Pentax, Hexagon, Leica, etc.