I would like to ask the companies that produce polyimide films, which are the industry leaders? Can you introduce it in detail? thank you

Dupont of the United States is naturally the boss, and the total quality of products is good. Saint-Gobain, France is also better, and the production workshop reaches 1000 level purification; In addition, there is a Chinese dollar in Japan, which seems to be in South Korea, and the quality is good; There are many domestic products, and ordinary imine films are being made in the north and south. You can search and see them. There are also good manufacturers of high-grade membranes, such as Shenzhen Ruihuatai, Tianjin Priman, Shanghai and Jiangsu, depending on your specific needs.