Security equipment manufacturing; Security equipment sales; Fire equipment sales; Fire technical services; Engineering management services; Intelligent robot research and development; Intelligent robot sales; Industrial robot manufacturing; Industrial robot sales; Industrial robot installation and maintenance; Special operation robot manufacturing; Intelligent unmanned aerial vehicle manufacturing; Intelligent unmanned aerial vehicle sales; Underwater systems and operational equipment manufacturing; Underwater systems and operational equipment sales; Communication equipment sales; Communication equipment repair; Communication equipment manufacturing; Mechanical equipment sales; Mechanical equipment research and development; General mechanical equipment installation services; Motor vehicle repair and maintenance; Auto parts retail; Class I medical device sales; Special labor protection product production; Special labor protection product sales; Artificial intelligence industry application system integration services; Intelligent control system integration; Software development; Internet of Things technology research and development; Internet of Things application services; Internet of Things technical services; Metal structure manufacturing; Metal structure sales; Metal door and window engineering construction; Building decoration material sales; Building material sales; New material technology research and development; New building material manufacturing (excluding hazardous chemicals); Import and export of goods; Import and export of technology; Photography and video production services; General equipment manufacturing (excluding special equipment manufacturing); Special equipment manufacturing (excluding licensed professional equipment manufacturing); Pump and vacuum equipment manufacturing; Pump and vacuum equipment sales. Licensed items: Construction engineering construction; Construction engineering design; Building intelligent system design; Residential interior decoration; Special equipment inspection and testing; Surveying and mapping services; Electrical installation services; Road motor vehicle production; Road dangerous goods transportation.