1
Chemicals for use in industrial water treatment; Chemicals for urban water treatment; Chemical products for the treatment of drinking water; Chemicals for the treatment of fumes; Chemical preparations for soil treatment
11
Water sanitation equipment and installations; Fume sanitation equipment and installations; Soil sanitation equipment and installations
37
Construction of installations for the purification and filtration of fumes and waste water and for the recycling of waste products; Assembly of water sanitation installations; Assembly of fume sanitation installations; Assembly of soil sanitation installations
40
Recycling and treatment of materials using chemicals; Recycling and waste treatment; Purification and filtration of fumes, drinking water or waste water; Recycling of residual products; Consultancy relating to the aforesaid services; Water sanitation; Fume sanitation; Treatment of abandoned polluted soils; Providing of information relating to the treatment of water, fumes and soil
42
Technical design in the field of water supply installations; Scientific and industrial research and information relating to processes for the purification and filtration of fumes and waste water and the recycling of waste products; Scientific and technical consultancy, and engineering (surveying) and laboratory work in the field of water, fume and soil sanitation