Class 011
Environmental Control Instrument Products (lighting,heating,cooling,cooking)
heat exchangers; filters for exhaust emission control; boilers; apparatus for purifying of gas; filters for purifying of gas (parts of maritime or industrial installations)
Class 037
Construction and Repair Services
Repair, maintenance and installation of dry and wet scrubber systems for exhaust gas filter systems; installation, repair and maintenance services for separators (centrifuges), heat exchangers, gas purifiers, boilers, exhaust gas filter systems, filters for removing emissions from exhaust streams