plumbing installations; water heaters for household purposes; water heaters; boiler pipes for heating installations; water conditioning units; water-pipes for sanitary installations; water supply installations; sanitary and bathroom installations; bathroom installations; water conditioning systems; pipes for heating boilers; flushing apparatus for water-closets; water conditioners; heating installations [water]; flexible pipes being parts of basin plumbing installations; flexible pipes being parts of shower plumbing installations; water purifying apparatus for household purposes; shower sprayers [plumbing fittings]; flexible pipes being parts of wash-hand basin plumbing installations; bath plumbing fixtures, bath fittings, bath installations; water conditioning equipment; water heating installations; bath installations, bath plumbing fixtures, bath fittings; water conditioning installations; water conditioning apparatus; bath plumbing fixtures, bath installations, bath fittings; pipes [parts of sanitary installations]; sanitary and bathroom installations and plumbing installations; water heaters for household use; bath plumbing fixtures; shower hoses; pipes being parts of sanitary installations; water purifying apparatus for household use; filters for faucets [plumbing fittings]; bath plumbing fixtures, bath fittings; faucet filters [plumbing fittings]; simple water-closets; cisterns for water-closets; shower drains [sanitary installations]; bath installations, bath fittings, bath plumbing fixtures; flexible pipes being parts of bath plumbing installations

installation and repair of bathroom heating devices; repair of plumbing; installation of plumbing; plumbing installation, maintenance and repair; maintenance of water purifying apparatus; repair or maintenance of water purifying apparatus; plumbing services; installation, maintenance and repair of gas, electricity and water supply apparatus; maintenance of plumbing; plumbing; installation of water pipes; routine servicing of heating apparatus; maintenance of apparatus for purifying water; installation, maintenance and repair of water supply apparatus; installation of equipment and apparatus for gas and water supply; repair of water supply apparatus; installation of air conditioning apparatus; installation of water supply apparatus; installation of plumbing systems; routine servicing of ventilating apparatus; installation of air-conditioning systems; installation of heating, ventilation and air-conditioning systems; emergency servicing of water supply apparatus; repair of apparatus for purifying water