1. Sichuan Tianyi Technology Co., Ltd.: Mainly engaged in research and development, production and sales of potassium iodide, potassium iodate, sodium iodide and other products.
2. Qinghai Spring Pharmaceutical Co., Ltd.: Mainly engaged in the production and sales of iodized salt, potassium iodide and other products.
3. Guangdong Midea Real Estate Co., Ltd.: Its main business involves potassium iodide, banking, real estate and other fields.
4. Hunan Tianrun Dairy Co., Ltd.: Mainly engaged in the production and sales of dairy products, potassium iodide, food additives and other products.
It should be noted that the above companies have other business areas besides potassium iodide. Investors should fully consider the company's operating conditions, financial conditions, future development trends and other factors when making investment decisions.