Core Viewpoint - Cathay Group (603977.SH) does not directly hold tantalum and niobium-related minerals but relies on its subsidiary, Tuohong New Materials, for the smelting and processing of tantalum and niobium ores [1] Group 1: Company Operations - Tuohong New Materials produces ordinary tantalum oxide, potassium fluotantalate, and niobium oxide with an annual capacity of 500 tons of tantalum and niobium compounds [1] - The processed products, including tantalum powder, tantalum ingots, and niobium ingots, are supplied to end industries such as electronics, hard alloys, and new energy [1] - Major customers of Tuohong New Materials include processing companies of tantalum and niobium oxides and supporting enterprises in end industries [1] Group 2: Industry Context - Tantalum and niobium are rare metals with wide applications; tantalum is primarily used in military aerospace, electronic information, semiconductors, and superconducting high-tech fields [1] - Niobium is widely applied in military aerospace, special steel, optical glass, and ternary batteries [1] - The downstream customers include well-known companies such as Dongfang Tantalum, Hongda Electronics, Zhenhua Technology, Jiangfeng Electronics, and Deqing Huaying [1] Group 3: Production Capacity - The annual production capacity of Sanstone Nonferrous Metals for tantalum and niobium oxides is 1,000 tons, offering a comprehensive range of tantalum and niobium rare metal products [1]