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08-21
Racing helmet:It mainly refers to the helmet used in automobile racing. For example, F1 racing, F1 drivers helmet is composed of carbon, Kevlar fiber, polyethylene three materials. Helmets used in F1 m…
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08-21
1. The lighter the helmet, the betterRelatively speaking, the lighter the helmet, the better. But the lighter the riding helmet, the less chance it will pass the national safety certification test stan…
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