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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CE EN 1077 and CE EN 1078 are both mandatory European safety standards, but they govern different sports: EN 1077 applies to ski and snowboard helmets, while EN 1078 applies to bicycle, skateboard, and roller skating helmets. The key difference is that EN 1077 requires a penetration resistance test
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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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