maintenance and repair of electrical systems, steam systems, heating equipment, and air conditioning systems; maintenance and repair of rotating equipment; and maintenance and repair of steam traps, valves, piping, and containers
Building Construction and Repairthermography survey and diagnostic services for electrical systems, steam systems, heating equipment, and air conditioning systems; monitoring, checking, and diagnosis services for rotating equipment; and survey and diagnosis services for steam traps, piping, and containers
Computer and Scientific