天通股份：公司主营业务未发生重大变化

Core Viewpoint - The company, Tiantong Co., Ltd. (600330.SH), has announced that its main business operations in electronic materials and high-end specialized equipment are normal, with no significant changes or undisclosed major information [1] Group 1 - The company specializes in the research, development, manufacturing, and sales of electronic materials and high-end specialized equipment [1] - The company has conducted a self-inspection and confirmed that its production and operational order is normal [1] - There are no significant changes in the company's main business activities [1]