1
Chemicals for use in the manufacture of water softening products and water purifying products
6
Pipes and tubes of metal
11
Water filtering units for domestic, commercial, industrial use; water softening units and water purifying units; water distribution units; incinerators; electric heating apparatus, namely, portable electric heaters; heating apparatus for solid, liquid or gaseous fuels, namely, kerosene heaters, gas heaters, propane heaters, coal heaters
17
Flexible pipes, not of metal
19
Non-metallic rigid pipes
37
Installation and repair of water distribution systems, water treatment systems and irrigation device systems; cleaning of buildings; disinfecting; building construction, supervision of construction works and of building demolition; installation and repair of heating apparatus, of apparatus for air conditioning, of electric apparatus, of furnaces, of refrigerating apparatus; insulating services
39
Public utility services in the nature of water supplying and water distribution; public utility services in the nature of transport by air, by land, by boat, transport brokerage, providing information about transportation; public utility services in the nature of distribution of energy and electricity; putting water in bottles and carboys, namely packaging articles for transportation; delivery of bottles and demijohns of water by truck, air, train, boat-
40
Water treatment and purification, water proofing of walls, foundations, buildings; waste treatment, waste and trash destruction; air deodorizing, air purifying and air refreshing; production of energy; generator rental for the production of heat and electricity; providing information regarding waste and trash treatment; incineration of trash, recycling waste and trash
42
Bacteriological and chemical research, chemical analysis; sorting of waste and recyclable raw material; mechanical research, technical consultation and research in the field of waste management, water treatment, water distribution, waste collection, waste treatment, telecommunications, telecommunication networks, data processing, civil engineering; engineering; consultation in environment protection