万润科技：主要从事LED、半导体存储器新一代信息技术业务、综合能源服务业务和广告传媒业务

Group 1 - The company, Wanrun Technology, primarily engages in LED, semiconductor memory, new generation information technology, comprehensive energy services, and advertising media businesses [2] - Wanrun Technology's wholly-owned subsidiary, Shenzhen Wanrun New Energy Co., Ltd., has initiated operations in comprehensive energy services for public buildings and industrial sectors, as well as distributed photovoltaic and wind power new energy businesses [2]