国瓷材料：关于合资公司完成工商注册登记的公告

Group 1 - The company announced the establishment of a joint venture focused on the research and industrialization of solid-state electrolyte materials [2] - The joint venture was approved during the company's fifth board meeting held on August 17, 2025 [2] - The joint venture has completed its business registration and obtained a business license from the Dongying Economic and Technological Development Zone Market Supervision Administration [2]