Specification :

Bulletproof helmet is a device to effectively protect human head from the penetration of bullet pellets or fragments. Bulletproof visor is used to effectively protect human eyes and face from the penetration of bullet pellets or fragments, thus to ensure normal observation. Police bulletproof helmet and visor must confirm to the standard of GA293-2001 Helmet and Visor for Pilice.
According to different material, bulletproof helmets can be classified into metal, nonmetal and composite helmets. Bulletproof visor is mede by transparent material, with its height not less than 130mm, arc lenghth not less than 300mm and light transmission in the testing area higher than 70% .
The level NIJ II IIIA III… ETC.