1. China Tungsten Industry Co., Ltd. (600549): One of the largest tungsten producers in China, mainly engaged in the mining, smelting, processing and sales of tungsten products.
2. Yongxin Co., Ltd. (0020 14): Mainly engaged in research and development, production and sales of tungsten and rare metal products, covering tungsten alloy, tungsten steel, tungsten wire and other varieties.
3. orient tantalum industry Co., Ltd. (000962): It mainly produces rare metal products such as tantalum, niobium, tungsten and molybdenum, which are widely used in aerospace, nuclear industry, electronics and other fields.
4. China International Tungsten Industry Co., Ltd. (000657): Mainly engaged in the mining and smelting of tungsten resources, the production and sales of tungsten powder, etc.