The bulletproof helmet adopts two advanced high-performance fiber materials - aramid and PE, which are lighter in weight and more stable in bulletproof safety compared to traditional steel helmets. Public security level and NJ IIIA level bulletproof helmets can effectively prevent the penetration of 7.62mm lead core bullets from Type 54 pistols and 9mm Balabeirum bullets from UZI 9mm assault rifles, respectively. They are suitable for military and police personnel. The surface of the protective helmet shell adopts a polyurea spraying process, which is high-temperature resistant, UV resistant, corrosion-resistant, waterproof and flame retardant.