| Class | Class Name | 
|---|---|
| 37 | installation, maintenance and repair of lighting apparatus and instrument | 
| 37 | installation, maintenance and repair of machinery and equipment | 
| 37 | installation, maintenance and repair of water filtering apparatus | 
| 37 | installation, maintenance and repair of water purification and filtration apparatus | 
| 37 | installation, maintenance or repair of cooling equipment | 
| 37 | installation, maintenance or repair of fuel cell generating equipment | 
| 37 | installation, maintenance or repair of heat pumps | 
| 37 | installation of apparatus for use in mooring | 
| 37 | installation of automobile accessories and parts for vehicles | 
| 37 | installation of car radio systems | 
| 37 | installation of complete photovoltaic systems for a variety of photovoltaic applications | 
| 37 | installation of computer hardware | 
| 37 | installation of cooling appliances | 
| 37 | installation of data network apparatus and data processing apparatus | 
| 37 | installation of dental and medical apparatus | 
| 37 | installation of disc brakes for machines or apparatus | 
| 37 | installation of doors and windows | 
| 37 | installation of drainage, environmental control systems and machines, waste liquid disposal systems and water purifying plants | 
| 37 | installation of electrical and electronic apparatus | 
| 37 | installation of electrical apparatus and appliances | 
| 37 | installation of electrical machines | 
| 37 | installation of electricity generators | 
| 37 | installation of environmental engineering systems | 
| 37 | installation of fire alarms | 
| 37 | installation of fire extinguishing apparatus | 
| 37 | installation of heat pipes for machines or apparatus | 
| 37 | installation of heating and air-conditioning systems | 
| 37 | installation of in-house audio-video systems | 
| 37 | installation of lifts, escalators, shutters, gates, signs, roofings and pavings for buildings | 
| 37 | installation of machines in industrial plants | 
| 37 | installation of machines relating to tyre | 
| 37 | installation of measuring or testing machines and instruments | 
| 37 | installation of motorcycle parts | 
| 37 | installation of optical machines and instruments | 
| 37 | installation of parts for motor vehicles | 
| 37 | installation of pipe systems for distributing gas | 
| 37 | installation of power generating and transmission apparatus and equipment | 
| 37 | installation of public baths | 
| 37 | installation of radio and television systems | 
| 37 | installation of radio telephones | 
| 37 | installation of roof drainage systems | 
| 37 | installation of satellite master antenna television system | 
| 37 | installation of semiconductor manufacturing machines and systems | 
| 37 | installation of solar powered systems | 
| 37 | installation of storage facilities in ports | 
| 37 | installation of temporary structures for exhibitions and trade fairs | 
| 37 | installation of utilities in buildings | 
| 37 | installation of utilities in construction sites | 
| 37 | installation of water pumps and electrical controllers for controlling the speed of motors | 
| 37 | installation of wireless communications equipment |