Every paili de flashlight, by weight, made of aircraft grade aluminum alloy high hardness. Is different to most of the manufacturers use the material of the cylinder body, Pelley de most of the flashlight shell is made from CNC lathe and a made. As the barrel body is one of the molding, there is no more processing, so the production of the torch with a higher accuracy and mechanical strength, but also to respond to a variety of harsh environment (such as car rolling, falling, etc.). In addition to the use of high strength aluminum material, all paili de torch army regulations three by anodic oxidation treatment. Army regulations three oxidation treatment can form a layer of hardness only to diamond of high strength protective film on the surface of aluminum alloy, can effectively prevent the flashlight by scratching and wear or corrosion.