Automatic monitoring systems, automatic control systems, electrical equipment, various detectors, controllers, sensors, explosion-proof instruments and meters, electromechanical equipment, electronic products, intelligent robots, drones, communication equipment (excluding wireless radio and television transmission and satellite ground receiving equipment), fire protection products, security equipment, fire motorcycle R&D, design, production, sales, installation, maintenance, construction; computer software development Development and sales; professional contracting of building intelligent engineering, building decoration engineering, metal door and window engineering, fire protection facility engineering, building waterproofing, anti-corrosion and insulation engineering, construction engineering, municipal utility engineering, electric power engineering, power transmission and transformation engineering, mechanical and electrical engineering, safety technology and prevention engineering; engineering rescue; engineering design; fire protection facilities and equipment maintenance, maintenance, testing and fire protection technical services; import and export of goods and technology. .