中钢天源：四氧化三锰产品可用于锰酸锂、磷酸铁锰锂等电池材料中

Group 1 - The core viewpoint of the article is that Zhonggang Tianyuan (002057) emphasizes the importance of its manganese tetroxide products in the battery materials industry, specifically for lithium manganese oxide and lithium iron manganese phosphate [1] Group 2 - The company's manganese tetroxide products are identified as crucial upstream materials in the manganese-based cathode supply chain [1]