English 
Usually, the shell of the helmet is made of high-strength materials, such as metal, engineering plastics, Kevlar fiber, etc., through its deformation to absorb most of the impact; the lining material has the ability to absorb sweat, keep warm, and absorb shock. Military helmets often have the functi
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CPSC 1203 testing subjects bicycle helmets to extreme heat, cold, and water immersion conditioning, followed by an impact attenuation test where the helmet is dropped onto flat and hemispherical anvils. Peak acceleration must stay below 300g for the helmet to pass. Shengtao Sports builds ever
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A dual certified bike helmet supplier tests and certifies products to both CPSC (United States) and CE EN 1078 (European Union) standards. Brands selling in both markets cannot rely on a single-region helmet, since CPSC and EN 1078 use different impact, coverage, and labeling requirements. Pa
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