1. camera: it can repair various brands and models of cameras, such as SLR, non-reflex, off-axis, large and medium format, etc.
2. Lens: various brands and models of lenses can be repaired, including fixed focus, zoom, manual and automatic.
3. Telescopes: All kinds of brands and models of telescopes can be repaired.
4. Other optical equipment: such as magnifying glass, microscope, sight, etc.
5. Electronic equipment: including radar, radio and audio equipment.