Emergency rescue services; non-emergency medical transport services; general aviation services; installation and sales of emergency rescue equipment, fire-fighting equipment and apparatus, mechanical equipment, lighting equipment, and safety protection equipment; sales of air-powered boats; research, development, and sales of robots and accessories, and safety and energy-saving system equipment; road rescue services; fire detection; fire-fighting facilities and equipment testing, repair, and maintenance; fire engineering design and construction; sales of fire-fighting vehicles; fire information consulting services; property management; environmental protection testing.