Water purification apparatus for biological waste water treatment; plastic biofilm modules for biological waste water treatment in fixed film reactors and mass transfer between liquids and gases, namely, water filters, structural parts for the aforesaid goods; [ heat exchangers not being machine parts; moisture exchangers, namely, humidifiers; exchange elements and inserts for cooling towers, namely, heat exchangers not being parts of machines; splash deflectors for cooling towers, namely, anti-splash tap nozzles; ] inserts for filtering [ air and ] water, namely, [ air filters for industrial installations and ] water filters [ ; gas scrubbers, ventilating apparatus and equipment, namely, ventilating louvers and ventilation hoods; humidifiers for conditioning air and gases, evaporative air coolers ]

Plastics in extruded form for use in manufacture; semi-processed plastic used in manufacturing parts for waste water clarifying installations, drinking water treatment installations, air humidifying apparatus and installations, refrigerating apparatus and installations and cooling towers, storage and seepage installations for rainwater or waste water, namely, filling materials in foil form, in the nature of polypropylene or polyvinylchloride foil other than for packing [ ; foil of regenerated cellulose for filters used in aquaculture, for mass transfer and mass transfer columns, and for air/exhaust gas purification, and for air humidifying, namely, synthetic plastic as semi-finished products in the form of foils ]

Non-metallic building materials, namely, plastic webbing material used to reinforce bituminous waterproofing sheets, plastic pipe supports, cellular PVC trim, composite panels composed primarily of non-metal materials, [ concrete based slabs, cementitious material for building purposes, ] reinforcing materials not of metal for building purposes; non-metallic rigid pipes for building, namely, non-metal sewer pipes and non-metal water pipes [ ; asphalt, pitch and bitumen; non-metallic transportable buildings ]