瑞丰高材：控股子公司瑞丰玥能主要从事黑磷产品的研发及低成本产业化相关业务，目前尚处于吨级中试阶段

Group 1 - The company is currently in the ton-level pilot testing stage for its black phosphorus products, which will not significantly impact this year's performance [2] - The company's subsidiary, Ruifeng Yuanneng, is primarily engaged in the research and development of black phosphorus products and related low-cost industrialization [2]