This handheld fiber laser marking and engraving machine F20H is a pure handheld mobile model, specially used for on-site marking of large metal structures, equipment, ships and steel parts. The handheld gun is light and easy to hold for a long time, with flexible operation, suitable for various complex on-site environments. It can mark logos, codes, names and other permanent marks on metal surfaces, with clear effect and no damage to the workpiece. The equipment is battery-powered, convenient for outdoor use, and is widely used in engineering, construction, shipyards and large factories.