云图控股：公司已与当升科技、泰丰先行、蜂巢能源以及中创新航等头部客户建立了稳定的合作关系

Group 1 - The core viewpoint of the article is that Yuntu Holdings (002539.SZ) is actively engaged in the production of iron phosphate, which is primarily used in the preparation of lithium iron phosphate for lithium battery cathodes, with applications in both power batteries and energy storage batteries [2] - The company has established stable partnerships with leading clients such as Tinci Materials Technology, Taifeng Xianxing, Honeycomb Energy, and Zhongchuang Innovation航, indicating a strong market position and demand for its products [2]