– Building contractors
– Building insulation and weather-proofing contractors
– Gas, water, plumbing, heating, ventilation and air conditioning (HVAC) plant installation and maintenance contractors
– Plastering contractors
– Roofing and wall cladding contractors

– Civil and marine engineering contractors

– Earth-moving, excavation, foundation and tunnelling contractors

– Spring, well, irrigation and water supply contractors

– Transport infrastructure engineering contractors

Electrical, Electronics & Optical

– Electronic equipment. Telecommunications equipment

– Radars and radar components

IT, Internet, R&D

– Information technology (IT) and Internet

– Electronic data processing (EDP) services

– Information technology (IT) auditing and consulting services

– Information technology (IT) engineering

– Technical offices and engineering consultancies, architects

– Building industry information consultants

– Electronic and telecommunications engineering consultants

– Transport equipment engineering consultants NES

Leisure & Tourism

– Leisure, culture and entertainment

– Leisure and sports centres

– Postal services, telecommunications, radio and television

– Postal and courier services

Metals, Machinery & Engineering

– Engines and mechanical parts

– Internal combustion engines

– Industrial subcontractors

– Precious metal refining contractors

Paper, Printing, Publishing

– Printing and publishing

– Printing specialities

Retail & Trader

– General traders, department and retail stores

– Retail trade

– Wholesale trade

Transport & Logistics

– Means of transport

– Aeroplane navigational systems
– Control and navigational instruments for ships
– Motor vehicle braking system parts
– Motor vehicle steering and suspension parts
– Motor vehicle transmission parts and spare parts

– Transportation and logistics services

– Airport administration

– Airport services