43.21.Z - Electrical installation
62.01.Z - Computer programming activities
84.25.Z - Fire service activities
80.20.Z - Security systems service activities
74.10.Z - Specialised design activities
71.20.B - Other technical testing and analysis
71.20.A - Food quality testing and analysis
71.12.Z - Engineering activities and related technical consultancy
63.11.Z - Data processing, hosting and related activities
62.09.Z - Other information technology and computer service activities
62.03.Z - Computer facilities management activities
27.12.Z - Manufacture of electricity distribution and control apparatus
61.90.Z - Other telecommunications activities
61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities
61.10.Z - Wired telecommunications activities
47.41.Z - Retail sale of computers, peripheral units and software in specialised stores
46.51.Z - Wholesale of computers, peripheral equipment and software
43.99.Z - Other specialised construction activities not elsewhere classified
43.29.Z - Other construction installation
42.22.Z - Works related to construction of telecommunications and electricity lines
