Twaron and Kevlar are brand names for aramid fibres, which are strong as steel yet much lighter. They are used to make bulletproof vests, strong ropes, and high-performance car tires, for example.
CHICAGO (WLS) -- It's National Police Week. The Chicago Police Memorial Foundation aims to help make sure officers are safe by replacing thousands of bulletproof vests. "Get Behind the Vest" is a ...
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