43.22.Z - Plumbing, heat and air-conditioning installation
27.12.Z - Manufacture of electricity distribution and control apparatus
33.14.Z - Repair and maintenance of electrical equipment
33.20.Z - Installation of industrial machinery and equipment and outfit
42.22.Z - Works related to construction of telecommunications and electricity lines
43.21.Z - Electrical installation
43.29.Z - Other construction installation
62.01.Z - Computer programming activities
62.02.Z - Computer consultancy activities
62.09.Z - Other information technology and computer service activities
70.22.Z - Business and other management consultancy activities
71.12.Z - Engineering activities and related technical consultancy
71.20.B - Other technical testing and analysis
80.20.Z - Security systems service activities
95.11.Z - Repair and maintenance of computers and peripheral equipment
