Mechanical Ventilation - Required & necessary for all those places which cannot be air conditioned. Its is economic way to control heat, emission, pollution & generate safe work conditions. e.g. STP plants, Factories, Assembly lines, Boiler rooms, area of public assembly, Commercial kitchens, public toilet, personal toilets, basement ventilation, car park ventilation, panel room ventilation, door control, dry scrubbers, FLP motors for flammable ambient conditions & many more aspects of engineering.