Ultra Minor Metals Ltd (UMM) is fully committed to ultrahigh & special rare metals materials,especially high-purity refractory metals. With its Ultra Purity Refractory Metals Materials R&D Centre, UMM is specialized on the research and manufacture of the fine powder, products, alloys, composite material and target of ultrapure, high-quality refractory metals and dissipated metals, such as Re, W, Mo, and Ti, etc....