Building & civil engineering
BC01Prefabricated and steel-framed buildings, industrial plants
BC02Building restoration and conservation
BC04General buildings and maintenance
CE01Roads, pavements, drainage, retaining structures, signcraft
CE04(ii)Irrigation and flood control systems
CE04(iv)Water retaining structures
CE04(vii)Flood control systems
CE08Oil and gas pipelines: installation, maintenance and repair
CE09Sewerage works and water supply
CE10General civil works, slope protection, concrete repair, soil stabilisation, waterproofing
CE11(i)General engineering works
CE11(v)Small hydel power station
CE11(vii)Infrastructure development works
CE11(ix)General building works
Electrical, solar & renewable energy
EE01Sound systems
EE02Security, safety and surveillance systems
EE03Building automation and energy generation systems
EE04Low voltage installation
EE06Specialised lighting systems
EE10Miscellaneous specialised works
EE11(i)Solar
EE11(ii)Solar energy
EE11(iii)Solar energy systems
EE11(vi)General electrical works
EE11(vi)Solar installation
EE11(viii)Wind and solar energy
EE11(vv)Solar-powered LED street lighting
EE11(xvi)Electrical works for power houses
EE11(xvii)Solar works
EE11(xix)Renewable energy works
EE11(xxiv)Digital signal processing, transmission and surveillance
EE11(xxv)Solar power