Business Scope: As stated in the articles of association: Development and sales of aviation simulation, testing, electronics, simulation, control technologies, as well as product manufacturing and sales; Research and development, production and sales of aviation onboard equipment; Development, manufacturing and sales of computer hardware, software, network and information engineering technologies; Maintenance and modification of aircraft; Research, manufacturing and sales of non-standard products; Design, manufacturing and sales of steel structure products; Design and construction of decoration projects; Processing, manufacturing and sales of equipment; Production and sales of mechanical and electrical products (excluding cars); Sales of building materials, chemicals, cultural supplies, hardware, rubber and plastic products; Technical and management consulting services; Import and export of goods or technologies (goods and technologies prohibited by the state or involving administrative approval are excluded). According to the "Zhuhai Special Economic Zone Commercial Registration Regulations", the business scope is not a registration item.