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Castelion Corporation is a defense manufacturer specializing in mass-producible hypersonic weapons and subsystems for allied militaries. Founded in 2022 and headquartered in El Segundo, California, the company addresses critical defense infrastructure needs by developing scalable manufacturing processes for advanced hypersonic technologies. Castelion differentiates itself through its focus on mass production capabilities, addressing a key bottleneck in hypersonic weapon deployment that has historically limited military adoption due to high costs and complex manufacturing requirements. The company serves allied military organizations seeking reliable, cost-effective hypersonic solutions. Castelion continues expanding its manufacturing capabilities and product portfolio to meet growing international defense demand for next-generation hypersonic systems.

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