Installation of electronic apparatus; Installing of electronic communications networks; Maintenance and repair of electronic apparatus; Maintenance and repair of electronic installations; Maintenance of electronic measuring devices; Maintenance of electronic monitoring devices; Maintenance of electronic testing devices; Repair of electronic apparatus; Electrical apparatus installation; Electrical apparatus repair; Electrical engineering services (construction); Electrical installation services; Electrical wiring services; Installation of audio electrical apparatus; Installation of electrical apparatus; Interference suppression in electrical apparatus; Maintenance and repair of electrical apparatus; Maintenance, installation and repair of electrical items and equipment; Repair of electrical appliances; Residential, commercial and industrial installation and repair of electrical and computer wiring and cabling; Marine engineering

Design of electronic systems; Design of electrical systems; Electrical engineering services (design); Electrical research