万润新能：公司已布局研发聚阴离子类型化合物等不同体系的钠离子电池正极材料，部分型号已实现数百吨出货

Group 1 - The company has developed various sodium-ion battery cathode materials, including polyanionic compounds, layered oxides, and Prussian blue/white types [2] - Some models of sodium-ion battery materials have achieved hundreds of tons in shipments and are widely used in energy storage and start-stop power applications [2] - The company has implemented product structure design, process optimization, and ion doping to continuously iterate its products, successfully developing sodium-ion products with higher packing density [2]