海特高新(002023.SZ)：目前已从维修扩展至航空发动机自动控制系统等领域的产品研制

Core Viewpoint - The company, Haitai Gaoxin, is positioned as China's first private aviation maintenance enterprise, focusing on enhancing its maintenance capabilities and advancing high-end equipment research and manufacturing [1] Group 1: Business Expansion - The company has expanded its operations from maintenance to include the development of products such as automatic control systems for aircraft engines, oxygen systems, rescue winches, subsystems for low-altitude aircraft, simulators, and key aviation components [1] Group 2: Strategic Focus - The company aims to leverage opportunities presented by the development of domestically produced large aircraft, contributing to China's aerospace industry [1]