electrical wiring services; telecommunication wiring services; wiring services for telecommunications; services of electricians; installation of electrical appliances; telecommunication wiring; installation services of telephones; installation and repair of electrical appliances; installation services of telephone lines; repair of electrical appliances; repair and maintenance of electrical appliances; repair of electrical equipment and electrotechnical installations; maintenance and repair of electrical appliances; providing information relating to the repair or maintenance of consumer electrical appliances; installation, maintenance and repair of electrical equipment; electrical equipment repair; repair or maintenance of consumer electrical appliances; repair of electrical equipment; installation of electrical wiring; maintenance of consumer electrical appliances; renovation, repair and maintenance of electrical wiring; provision of information relating to the repair or maintenance of consumer electrical appliances; telephone line installation; repair of consumer electrical appliances; repair or maintenance of consumer electrical appliances and providing information relating thereto; installation, maintenance and repair of electrical devices; installation of electrical wiring for buildings; repair services of electric household appliances; installation of telephone lines; installation of telephones; repair or maintenance of consumer electrical appliances and provision of information relating thereto; repair or maintenance of consumer electric appliances; electrical installation services; installation services; installation of HVAC systems; air conditioner washing services; air conditioning factory renovation services; installation of heating, ventilation and air-conditioning [HVAC] systems; air conditioner cleaning services; air conditioning vent sealing services; installation, maintenance and repair of HVAC [heating, ventilation and air conditioning] systems; installation, maintenance and repair of heating, ventilation and air-conditioning [HVAC] systems; air conditioning apparatus washing services; air-conditioning apparatus washing services; heating system installation, repair and maintenance services; construction services