Handheld laser marking machines are portable mobile laser engraving devices, primarily featuring fiber laser handheld marking machines. They discard the traditional desktop fixed frame structure, integrating the laser emission and scanning head into a lightweight, handheld gun-style design. The main unit is paired with a detachable cable, allowing for handheld mobility to directly mark and engrave large, heavy, non-disassemblable, or workbench-unfriendly workpieces on-site. This enables laser permanent marking and engraving without restrictions on location or workpiece size, widely used in outdoor construction.