Xanyi Mak-Industrial Portable Dot Peen Marking For Large Size Metal Body is also called a portable dot peen marking machine, a portable metal marking machine, a numerical point needle marking machine, and a portable pneumatic marking machine.This portable dot peen marking machine can permanently make logos on various metals and some hard plastics. For example, characters and letters can be made on surfaces such as automobiles, motorcycles, machine tools, mechanical parts, metal pipes, and pump bodies.