43.21.Z - Electrical installation
42.22.Z - Works related to construction of telecommunications and electricity lines
42.99.Z - Works related to construction of other civil engineering projects not elsewhere classified
47.41.Z - Retail sale of computers, peripheral units and software in specialised stores
47.42.Z - Retail sale of telecommunications equipment in specialised stores
47.91.Z - Retail sale via mail order houses or via internet
47.99.Z - Other retail sale not in stores, stalls or markets
61.10.Z - Wired telecommunications activities
61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities
66.19.Z - Other activities auxiliary to financial services, except insurance and pension funding
