74.10.Z - Specialised design activities
42.22.Z - Works related to construction of telecommunications and electricity lines
82.19.Z - Photocopying, document preparation and other specialised office support activities
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
72.19.Z - Other research and experimental development on natural sciences and engineering
71.12.Z - Engineering activities and related technical consultancy
61.90.Z - Other telecommunications activities
47.99.Z - Other retail sale not in stores, stalls or markets
46.69.Z - Wholesale of other machinery and equipment
46.63.Z - Wholesale of mining, construction and civil engineering machinery
46.52.Z - Wholesale of electronic and telecommunications equipment and parts thereof
46.51.Z - Wholesale of computers, peripheral equipment and software
43.22.Z - Plumbing, heat and air-conditioning installation
43.21.Z - Electrical installation
26.11.Z - Manufacture of electronic components
33.20.Z - Installation of industrial machinery and equipment and outfit
33.14.Z - Repair and maintenance of electrical equipment
33.12.Z - Repair and maintenance of machinery
28.92.Z - Manufacture of machinery for mining, quarrying and construction
28.29.Z - Manufacture of other general-purpose machinery not elsewhere classified
27.90.Z - Manufacture of other electrical equipment
27.40.Z - Manufacture of electric lighting equipment
27.33.Z - Manufacture of installing equipment
27.12.Z - Manufacture of electricity distribution and control apparatus
26.51.Z - Manufacture of instruments and appliances for measuring, testing and navigation
26.30.Z - Manufacture of (tele)communication equipment
26.12.Z - Manufacture of electronic printed circuits
