Weighing apparatus manufacturing; weighing apparatus sales; IoT equipment manufacturing; traffic safety and control special equipment manufacturing; industrial automatic control system device manufacturing; industrial automatic control system device sales; industrial control computer and system manufacturing; industrial control computer and system sales; computer software and hardware and auxiliary equipment retail; metal structure manufacturing; metal structure sales; instrument and meter sales; mechanical equipment sales; electronic special equipment sales; power electronic component sales; metal material sales; hardware product retail; security equipment sales; office supplies sales; renewable resource sales; special equipment repair; general equipment repair; instrument and meter repair; general mechanical equipment installation services; mechanical equipment leasing; information system integration services; security system monitoring services; IoT technical services; security technical prevention system design and construction services; technical services, technical development, technical consulting, technical exchange, technology transfer, technical promotion; earthwork construction; road freight transport for general cargo vehicles with a total mass of 4.5 tons or less (excluding online freight and dangerous goods).