瑞丰高材：控股子公司瑞丰玥能的黑磷吨级中试装置已安装完成

Group 1 - The core point of the article is that Ruifeng High Materials has completed the installation of its black phosphorus pilot production line, which is a pioneering process with high technical difficulty [2] - The company is currently in the debugging phase of the pilot production line and will proceed to trial production after this phase is completed [2]