Portable Laser Marking Machine is a lightweight, mobile laser marking device. Unlike traditional large, floor-standing cabinets or fixed desktop models, the entire machine features a modular design, making it compact and lightweight. It can be hand-carried, transported in a vehicle, and moved by a single person, unrestricted by location or workstations. It mainly consists of two categories: handheld modular portable fiber laser marking machines and battery-powered outdoor portable marking machines. It can perform small item marking in workshops, as well as on-site engraving and outdoor engineering fieldwork.