electrical wiring services; telecommunication wiring; installation of electrical wiring; wiring services for telecommunications; telecommunication wiring services; renovation, repair and maintenance of electrical wiring; installation of electrical wiring for buildings; repair of electrical equipment and electrotechnical installations; electrical installation services; repair of electrical equipment; electrical equipment repair; interference suppression in electrical apparatus; repair of electrical apparatus; installation of electrical apparatus; installation, maintenance and repair of electrical devices; repair and maintenance of electrical apparatus; installation, maintenance and repair of electrical equipment; maintenance and repair of electrical apparatus; installation, maintenance and repair of electronic, electrical and mechanical apparatus; repair of electrical appliances; installation, maintenance and repair of electrical lighting apparatus; installation, maintenance and repair of electrical and electronic apparatus and equipment; installation and repair of electrical appliances; installation, maintenance and repair of apparatus for supplying electricity; electric apparatus repair; installation of electrical apparatus for buildings; providing information relating to the installation of electrical apparatus; repair and maintenance of electrical appliances; repair or maintenance of electric cooking apparatus and installations; installation of telephone cables; maintenance and repair of electrical appliances; installation of lightning conductors; installation of electrical appliances