1
Absorption agents; Chemical products for absorbing; Chemical adsorbents; Chemical preparations for use in industry; Chemicals for use in industry and science; Chemicals for use in manufacture; Catalysts; Chemical reagents for decontaminating gases; Chemical cleaning agents for use in industrial manufacturing processes; Chemical cleaning agents for use in industrial processes; Chemical substances for the protection of the environment; Chemical substances for use in dissolving poisonous gases; Chemical substances for use in dissolving toxic gases; Chemical substances for use in dissolving malodorous gases; Activated carbon; Filtering compositions; Filtering media [mineral substances]; Filtering materials [mineral substances]; Filtering materials [chemical preparations]; Chemical compositions for use in construction; Absorbing carbons
6
Building and construction materials and elements of metal
7
Pumps, compressors and fans; Machines and machine tools for treatment of materials and for manufacturing; Filtering machines, separators and centrifuges; Catalytic converters; Waste gas conduits [parts of machines]
9
Measuring, counting, alignment and calibrating instruments; Testing and quality control devices; Sensors and detectors; Controllers (regulators); Monitoring instruments; Physical analyzers [other than for medical use]; Physical analysing apparatus [other than for medical use]; Flue gas analyzers; Dust measuring apparatus; Residual gas analyzers; Air analysis apparatus; Air pollution measuring devices; Checking (supervision) apparatus and instruments
14
Iridium alloys; Silver alloys; Ruthenium alloys; Rhodium alloys; Palladium alloys; Osmium alloys
21
Pressed glass; Glass incorporating electrical conductors; Glass incorporating fine electrical conductors; Semi-worked glass; Heat protective glass (Semi-worked -)
37
Building, construction and demolition; HVAC (Heating, ventilation and air conditioning) installation, maintenance and repair; Servicing of mains services; Maintenance of industrial machinery; Services for the repair of conduits; Repair of air filtering apparatus; Repair of air filters; Repair of air filters and parts thereof; Pump repair; Repair of filters for machines, motors or engines; Pump repair or maintenance; Providing information relating to the repair or maintenance of pumps; Assembling [installation] of machine plant; Servicing of conduits; Maintenance and repair of pipes used in industrial equipment; Installation of environmental protection systems; Installation of environmental engineering systems; Installation of industrial machinery; Advisory services relating to pipe laying; Advisory services relating to the installation of pumps; Advisory services relating to the maintenance of environmental control systems; Advisory services relating to the repair of environmental control systems