| Nace | Description | Number of Company |
|---|---|---|
| 27.90.03 | Manufacture of mechanical and electromechanical signaling, safety and traffic control equipment (for railways, tramways, inland waterways, roads, parking facilities, airfields etc.) (including traffic lights and signal hardware) | 113 |
| 27.90.04 | Manufacture of carbon electrodes and other articles of graphite or other carbon used in electrical works (including coal heating resistors, battery carbons, and coals for arc lamps and other lamps etc.) | 35 |
| 27.90.08 | Manufacture of electrical machinery and devices with special functions (antenna amplifiers, electric fence energizer, electrical devices with translation or dictionary function, noise reduction units used in tape recorders etc.) | 71 |
| 27.90.09 | Manufacture of electric insulators (isolators) (except the ones made of glass and ceramic) | 18 |
| 27.90.10 | Manufacture of solarium booths, solarium lamps etc. and tanning equipment | 2 |
| 27.90.90 | Manufacture of other electrical equipment n.e.c. (electro-magnetic couplings, brakes and lifting heads, and electrical particle accelerators, signal generators etc.) | 70 |
| 33.14.01 | Maintenance and repair of power transformers, distribution transformers and special transformers (including electricity distribution and control apparatus) | 73 |
| 33.14.02 | Maintenance and repair of Electric motors, generators, and motor generator sets (including rewind of cones) | 341 |
| 33.20.51 | Installation services of electrical equipment (installation of electric motors, generators and transformers, electrical distribution and control equipment and other electrical equipment (except electrical signaling equipment for roads , etc | 453 |
| 35.12.13 | Transmission of electric energy (operation of the transmission system from the sources generating electric to the distribution system) | 259 |
