Installation, maintenance and repair of exhaust gas reduction systems; Maintenance and repair of nitrogen oxide removal devices; Installation and repair of nitrogen oxide removal devices

Exhaust gas reduction devices for automobiles; Particulate matter reduction devices for automobiles; Fuel economisers for automobiles; Power enhancement devices for automobiles; Fuel combustion promoting devices for automobiles; Hydrogen gas generators for automobiles; Nitrogen oxide removal devices for automobiles

Combustion apparatus for hydrogen mixed fuel; Hydrogen generators for chemical processing; Electrolysis apparatus for generating hydrogen gas; Hydrogen generators using electrolysis; Water electrolysis apparatus for hydrogen production; Generators; Hydrogen generators; Electric generators using hydrogen as fuel; Fuel economisers for motors and engines

Combustible fuel gas for use as fuel for means of transport, and for use as fuel for interior air-conditioning units

Chemical Fire Extinguishing Agents