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Polybenzoxazole fibers are heat-resistant, high-performance with benzene-fused oxazole ring structure in it. Polybenzoxazole fibers are known for their strength and are twice as strong as amid fibers such as Kevlar and Nomex. Furthermore, it has 100⁰C higher decay temperature than aramid and shows minute creep under the continuous load. Polybenzoxazole fibers are part of synthetic fibers, which exhibit excellent mechanical properties such as low self-weight and high tensile strength. Due to this, they find applications in reinforced materials. Moreover, it also absorbs low moisture, making it suitable for high humidity working conditions. Polybenzoxazole fibers find applications in space elevators, military applications including body armor, conductive textiles, and motorsport applications.