Tianjin TianYuan Electrical Materials Co., Ltd. is one of the largested enterprises that use the casting and “biaxial stretching” to produce polyimide film products. At present, the company has a wholly-owned subsidiary, three production plants, ten polyimide production lines and nearly 200 employees. In addition, the company was officially listed on the New Third Board on February 14, 2017,(the primary stage of Chinese stock market) and entered the innovation layer of the New Third Board in 2021,(the middle stage of Chinese stock market) docking into the capital market, laying a solid foundation for the future development.