Bullet-proof helmets used mostly in the Army combat personnel, the main points of both American and German helmet. In addition to vintage helmet outside, current manufacturing ballistic helmets are the main materials of ultra high molecular weight polyethylene fiber (DOYENTRONTEX) aramid (Kevlar) two materials, ultra-high molecular weight polyethylene fibers helmet light, preventing the Bureau of secondary requirements weight is only 1.2kg. Infantry body armor the helmet to break direct shrapnel and bullet-proof, General requirements to deal with 5M 9mm calibre projectiles and shrapnel impacts.