Cadoux Limited (ASX:CCM; OTC:FYIRF), an Australian critical minerals company founded in 1993 and headquartered at 49 Ord Street, West Perth, Australia, focuses on the exploration, evaluation, and development of high-purity alumina (HPA) and rare earth projects to supply the electric vehicle, LED lighting, semiconductor, and high-tech sectors; its core assets include the 100%-owned Cadoux kaolin deposit in Western Australia for producing ultra-high purity 4N (99.99%) and 5N (99.999%) HPA products used in battery separators, LED substrates, and precision polishing applications such as microchip wafers; and the Minhub mineral sands processing and rare earths facility in Darwin, Northern Territory, designed to upgrade third-party heavy mineral sands feedstocks into rare earth-rich xenotime and monazite concentrates for magnets and other advanced materials, with operations targeting Australia and Southeast Asia including potash concessions in Thailand. The company rebranded from FYI Resources Limited to Cadoux Limited in December 2023 to reflect its strategic emphasis on critical minerals development; in May 2024, it acquired a 50% stake in Minhub Operations Pty Ltd from Arafura Rare Earths Limited (ASX:ARU), assuming full funding responsibility through the project's feasibility study completion expected in late 2024, while advancing front-end engineering and design (FEED) for a small-scale HPA demonstration plant at Kwinana, Western Australia, led by GR Engineering Services with milestones including process flow diagrams, equipment specifications, and environmental assessments; as of November 2025, Cadoux continues HPA progress with engineering studies and market development, alongside Minhub feasibility enhancements by IHC Mining, renewing offtake discussions with partners like Gippsland Critical Minerals, and maintaining top ESG ratings amid strong demand forecasts for HPA growing over 30% annually through 2028.