1) Class: 6
Description: drain pipes of metal, metal drain pipes, metal water pipes, metal hoses for plumbing use, drain channels of metal, metal drainage pipes, drainage pipes of metal, drainage channels of metal
2) Class: 11
Description: water supply installations, plumbing installations, water-pipes for sanitary installations, sanitary and bathroom installations and plumbing installations, drains for the draining of water in sanitary installations, shower drains [sanitary installations], shower drains being parts of sanitary installations, water flushing installations, water filtration and purification apparatus, installations for water purification, installations for water filtering, water distribution installations, water flushing installations for water-closets, sanitary and bathroom installations, water conditioning units, water dispensers, water filtering installations, water purification installations, bath installations, bath plumbing fixtures, bath fittings, pipes [parts of sanitary installations], domestic water filtering units, wash-hand basins [parts of sanitary installations], installations for purifying water, water purification and filtration apparatus, water heating installations, bath plumbing fixtures, bath installations, bath fittings, bath plumbing fixtures, water conditioning equipment, pipes being parts of sanitary installations, water conservation plumbing fixtures being water saving toilets, heating installations [water], water conduits installations, water treatment apparatus for infusing irrigation water with liquid fertilizer, water conservation plumbing fixtures being showerheads, purification installations for sewage, water flushing installations for toilets, domestic water filtering apparatus, flexible pipes being parts of plumbing installations for wash-hand basins, installations for the purification of sewage, sewage purification installations, mixer taps for water pipes, machines for water treatment, water filtration installations, water treatment units for aerating and circulating water, water purification machines, water treatment apparatus for water purification, water flushing installations for water closets, flushing apparatus for water-closets, water conservation plumbing fixtures being faucets, washers for water taps, sewage purification apparatus, bath plumbing fixtures, bath fittings, water filtering units, rainwater purification installations, water treatment filters, water purifying apparatus and machines, water flushing installations for toilets [water-closets], apparatus and installations for purifying industrial water, water purifying apparatus for household purposes, water purifying installations, water purifiers, wastewater purification installations, water purification units, water filtration apparatus for domestic use, purification apparatus for sewage, flexible pipes being parts of wash-hand basin plumbing installations, water filtering apparatus, water purifiers for household purposes, water purification apparatus, direct-coupled simple water-closets, water purifying machines, bath plumbing fixtures, bath installations, bath fittings, simple water-closets, water filtering apparatus for domestic use, water filters, automatic watering installations, water conditioning apparatus, cooling installations for water, water purifying apparatus for household use, flushing cisterns for water-closets, bath plumbing fixtures, bath fittings, bath installations, water filtering units for domestic use, water cooling installations, water conditioning systems, shower drains [parts of sanitary installations], water conditioning installations
3) Class: 19
Description: drainage channels, not of metal, drainage pipes, not of metal, secondary moisture drainage systems consisting of non-metal troughs and collection boxes, floor drainage channels made of non-metallic materials, industrial water tanks of masonry
4) Class: 35
Description: retail services for water supply equipment, retail services or wholesale services for water purifying filtration apparatus, online retail store services featuring water supply equipment, wholesale services relating to water supply equipment, wholesale store services featuring water supply equipment, wholesale services in relation to water supply equipment, retail store services featuring water supply equipment, retail services relating to water supply equipment, online wholesale store services featuring water supply equipment, retail or wholesale services for water purifying filtration apparatus, on-line retail store services featuring water supply equipment, retail services in relation to water supply equipment, wholesale services for water supply equipment, retail services or wholesale services for industrial apparatus for purifying water, retail or wholesale services for industrial apparatus for purifying water, on-line wholesale store services featuring water supply equipment, on-line retail store services featuring sanitation equipment, retail store services featuring sanitation equipment, online retail store services featuring sanitation equipment, retail store services featuring sanitary installations, retail or wholesale services for wastewater filtration apparatus, retail services or wholesale services for wastewater filtration apparatus, retail services or wholesale services for medical apparatus for purifying water, wholesale store services featuring sanitation equipment, online wholesale store services featuring sanitation equipment, wholesale services relating to sanitary installations, wholesale services in relation to sanitary installations, retail or wholesale services for waste water filtration apparatus, retail services in relation to sanitation equipment, online wholesale store services featuring sanitary installations, wholesale services for sanitary installations, retail services relating to sanitation equipment, retail services or wholesale services for waste water filtration apparatus, retail services for sanitation equipment, retail or wholesale services for medical apparatus for purifying water, on-line retail store services featuring sanitary installations, retail services relating to gas pumps for service stations, retail services in relation to sanitary installations, online retail store services featuring sanitary installations, retail services relating to sanitary installations, retail services for sanitary installations, wholesale store services featuring sanitary installations, on-line wholesale store services featuring sanitation equipment, wholesale services for sanitation equipment, wholesale services in relation to sanitation equipment, on-line wholesale store services featuring sanitary installations, wholesale services relating to sanitation equipment, retail services for lighting, heating, cooking, refrigeration, drying, and ventilation appliances and equipment, retail services relating to gasoline pumps for service stations
5) Class: 37
Description: plumbing and installation of gas and water pipelines, repair of plumbing, installation of plumbing, plumbing installation, maintenance and repair, plumbing and installation of gas and water distribution networks, repair of water supply installations, drainage services, plumbing maintenance advisory services, maintenance of plumbing, plumbing, maintenance and repair services of public utilities in buildings, installation, maintenance and repair services of pumps, plumbing services, plumbing repair advisory services, installation of plumbing, gas and water systems, installation of plumbing systems, plumbing and glazing services, drain cleaning services, installation of plumbing, gas and water networks, maintenance services of electricity, gas and water distribution networks, advisory services relating to the maintenance of plumbing, drain cleaning services by high pressure water jetting, advisory services relating to the installation of plumbing, advisory services relating to the repair of plumbing, underground construction works relating to plumbing, construction, maintenance, cleaning and repair services, plumbing installation advisory services, installation, cleaning, repair and maintenance services, installation, maintenance and repair of water supply apparatus, masonry services, services for the washing of buildings, repair of gas and water installations, cleaning of drains, installation and repair services for irrigation systems, provision of cleaning services, installation, maintenance and repair of sewerage systems, installation of water pipes, repair or maintenance of water purifying apparatus, repair of water supply apparatus, cleaning services, installation, maintenance and repair of gas, electricity and water supply apparatus, installation of rainwater drainage systems, building washing services, maintenance of water purifying apparatus, emergency servicing of water supply apparatus, hydraulic construction services, pipe installation services, maintenance of electricity, gas and water distribution networks, underground construction works relating to water supply mains, repair or maintenance of water purifying apparatus and provision of information relating thereto, cleaning of drains by high pressure water jetting, installation, maintenance and repair of pumps and pumping stations, housekeeping services being cleaning services, installation of water supply apparatus, installation of equipment and apparatus for gas and water supply, concrete pumping services, construction, repair, maintenance and installation services, repair of water purifying apparatus, underground construction works relating to water supply pipes, repair or maintenance of water purifying apparatus and providing information relating thereto, maintenance of apparatus for purifying water, excavating services for verifying the location of utility lines, construction and maintenance services relating to civil engineering, toilet [water-closet] installation and repair, housekeeping services being vacuuming services, installation of utilities in construction sites, installation and repair of toilets [water-closets], maintenance and repair of sanitary installations, hydraulic fracturing services, installation, maintenance and repair services for steam turbine compressors and pumps, construction of roads, sewers and water supply systems, installation, maintenance and repair services of irrigation equipment and devices, construction services, namely, excavation, installation and repair services for irrigation devices, installation, maintenance and repair of pumps and pump stations, pressure washing services, construction services relating to the installation of heating, ventilating and air-conditioning systems, provision of information relating to the repair or maintenance of water purifying apparatus, maintenance of sanitary installations, pump repair and maintenance, installation, maintenance and repair services for compressors and steam condenser pumps, pipelaying services, pump repair or maintenance, repair of apparatus for purifying water, installation, maintenance and repair of pumps, provision of information relating to bathtub and bath boiler cleaning services, underground construction works relating to drain laying, pump repair or maintenance and providing information relating thereto, repair of sanitary installations, installation, maintenance and repair services for air-cooled compressors and heat exchanger pumps, repair, maintenance and installation services, repair or maintenance of pumps, construction services, construction of sewerage systems, installation, repair and maintenance services