How about Changchun Cheng Juzhi making photoelectricity?

All right.

1, high processing capacity. Changchun Chengjuzhizao Photoelectricity has strong processing and testing capabilities. The aperture of all kinds of lenses can be processed to more than 500mm, the mirror profile is better than 1/200 wavelength, the surface roughness is better than 0.5nm, and the precision of micro-nano product line is better than 100nm, reaching the level of similar products in developed countries, breaking the blockade of foreign related technologies and products, and providing reliable domestic optical components for national military industry and aerospace fields.

2. qualifications. Changchun Chengjuzhizao Optoelectronic Co., Ltd. has successively applied for and obtained the certificate of quality management system for weapons and equipment, and obtained 2 invention patents, 5 utility model patents, and more than one appearance and software copyright patent 10, and was awarded as a national high-tech enterprise.