Bulletproof helmets are divided into three categories: metal, non-metal, metal and non-metal composite according to the material of the helmet shell.
In addition to the old-fashioned steel helmets, the main materials for making bulletproof helmets are ultra-high molecular weight polyethylene fiber and aramid. The ultra-high molecular weight polyethylene fiber helmet is lighter and meets the requirements of the Ministry of Public Security GA293-2012 "Police Bulletproof Helmet The weight of the bulletproof helmet required for level 2 protection in the "and face shield" standard is only 1.2kg. Infantry bulletproof helmets can resist shrapnel and direct-fire bullets. Generally, it is required to withstand the impact of 9mm pistol bullets and shrapnel 5m away.
