Sotong Development's subsidiary Guizhou Carbon Material Company increased its capital to 400 million, an increase of 19900%.

According to the Tianyan App, recently, Guizhou Suotong Shuangyuan Carbon Materials Co., Ltd. underwent a business change with Tang Hao resigning as the legal representative and Ren Chungao taking over. Guizhou Aluminum Industry Group Co., Ltd. was added as a shareholder. At the same time, the registered capital increased from 2 million RMB to 400 million RMB, an increase of 19900%. The company was established in July 2025, with business scope including the manufacture and sale of graphite and carbon products, heat production and supply, and import and export of goods, jointly held by Suotong Development and the newly added shareholder mentioned above.