Ducts of metal for ventilating and air-conditioning installations

Air-flow control apparatus including air-conditioning, heating, ducting, diffusers and associated fittings, and ventilation apparatus, including fans and in-duct, wall, ceiling, and roof mountings; air dryers (including hand dryers) and fan products, equipment and installations including extractor fans and shower fans; lighting products, equipment and installations; parts and accessories for the aforesaid goods included in this class

Device being a high performance switching power electronic controller for controlling optimal power flow from solar photovoltaic arrays for solar battery charging and solar water pumping applications and boosting output power from hydro and wind turbines; device being a high performance switching power electronic controller for controlling corrosion of metal structures, including oil and gas