Newly developed handheld laser printer, smart touch screen operation interface, thin and light body with high-density materials, the body weight is only 12 kg, and the handheld marking head is 1.98 kg. The battery version is optional, which can complete laser marking in a non-energized environment. The content of the marking system is easy to understand. The quartz high-transmittance coated field lens expands the field of view and supports various languages. Lianhe develops smart chips with powerful performance and can quickly process huge data and complex patterns. The focal length can be adjusted at will to adapt to a variety of working distances. The lightweight body can be moved at will for laser marking, and it solves the marking problems of automobile chassis, molds, back-shaped pipes, and large-scale equipment.