Portable Handheld Fiber Laser Marking Machine adopts portable integrated structure design, which is a new generation of laser marking machine system developed by Dowin laser with advanced laser technology. The electromechanical optical conversion efficiency of optical fiber laser marking is high. The whole machine is small in size, with good output beam quality and high reliability. It can carve metal materials and some non-metal materials, fiber laser adopts integrated whole structure, no optical pollution, power coupling and loss, air cooling, high efficiency, long life and less maintenance.