11
Water piping systems, conduit installations and water distribution systems and installations composed primarily of plastic pipes and absorbent textiles; irrigation and drainage systems composed primarily of plastic pipes and absorbent textiles for large areas such as golf courses, gardens or parks, for surface and underground humidification and dehumidification of soil, erosion protection, soil fertilization, soil aeration, soil loosening, soil disinfection, water resource management, for greening of roofs and air conditioning of buildings
17
Water hoses, not of metal; synthetic fiber threads not for textile use; plastic fibers not for textile use; yarns not for textile use; garden hoses; fabrics not for textile use, namely, absorbent fabric for storing water, not of metal; superabsorbers, namely, modified polyacrylate polymers used to retain water
19
Building materials, namely, plastic pipe supports, not of metal; drainage elements, namely, drain pipes made of plastic not of metal; geotextiles, namely, fabric for water conduits, water distribution and water supply, except for rainwater collection
22
Glass fibers, not for textile use, in particular water conduits, water distribution, water storage and water supply; mineral, cotton-wool, fleece and synthetic fibers, coconut fibers, textile fibers and flax fiber for water conduits, water distribution, water storage and water supply
23
Fiberglass thread, not for textile use
24
Water-permeable covering material, namely, geotextiles and non-woven fabrics for streets and pavements; cotton fabric, linen cloth, hemp fabrics, jute fabrics, fabrics and non-woven fabrics for water conduits, water distribution, water storage and water supply
37
Maintenance of irrigation systems
42
Planning and design for others in the field of irrigation systems; providing quality assurance services in the field of irrigation systems; providing documentation, namely, drafting regarding planning, design, and operation of irrigation systems
44
Landscape design