万润股份：热塑性聚酰亚胺产品（TPI）是一种高性能聚合物材料

Group 1 - The core viewpoint of the article is that Wanrun Co., Ltd. has clarified the application of its thermoplastic polyimide (TPI) products, which are high-performance polymer materials used in manufacturing components for the automotive and engineering machinery sectors [2] - The company stated that its TPI products have not yet been utilized in the C919 aerospace aircraft [2]