06
Prefabricated filter housings, namely, metal framework
structures
07
Pneumatic conveyors mainly consisting of pressure and vacuum
generators, pipelines, dust removers, dust discharging
apparatus; waste disposal installations, namely, food waste
disposals mainly consisting of pneumatic conveyors with
pipelines and vacuum generators, waste collectors of metal
or plastic and waste grinders for garbage; dust exhausting
and removing installations and de-dusting machines
consisting of dust exhausting apparatus, namely, vacuum
cleaners containing vacuum nozzles with tubes, pipelines,
dust removers and vacuum generators for industrial purposes;
electric dust removing apparatus, namely, vacuum cleaners;
electric vacuum cleaners; electrical water pumps for wetting
dust in buildings
11
Ventilating industrial fans; ventilation appliance
37
Maintenance and repair of dust exhausting and dust removing
equipment, de-dusting equipment, dust exhausting apparatus,
dust removers and vacuum generators, dust removing
apparatus, vacuum cleaners, dust wetters, industrial fans,
pneumatic conveyors, pressure and vacuum generators, dust
removers, dust discharging apparatus, waste disposal
equipment, vacuum generators, waste collectors and waste
grinders
42
Technical planning, development and design of dust
exhausting and dust removing equipments, de-dusting
equipment, dust exhausting apparatus, dust removers and
vacuum generators, dust removing apparatus, vacuum cleaners,
dust wetters, industrial fans, pneumatic conveyors, pressure
and vacuum generators, dust removers, dust discharging
apparatus, waste disposal equipment, vacuum generators,
waste collectors and waste grinders
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