中建材（上海）航空技术有限公司注册资本增至15.5亿元

Group 1 - The core point of the article is that China National Building Material (Shanghai) Aviation Technology Co., Ltd. has increased its registered capital from 1.05 billion to 1.55 billion yuan, along with changes in several executives [1] - The company was established in April 2021 and its business scope includes research and development of new material technology, engineering and technical research and experimental development, and sales of civil aviation materials [1] - The company is jointly held by China National Building Material Group Corporation and China National Materials Group Corporation [1]