Rust removal and oxide layer removal, multi-functional and fast cleaning. 360° non-contact cleaning, light reachs tricky place at a high speed like special-shaped parts, holes and grooves. Small size, light and flexible, easy to move and convenient to cleaning. Non-grinding and non-contact cleaning methods, less heat on the metal surface, less damage to the base material. Lens never burning, even 10 hours of continuous rust removal without rest. Quick cleaning of large metal components such as mild steel, stainless steel, aluminum alloy and composite materials. Applicable to ships, steel structures, construction, engineering machinery and other fields.