Ventilation apparatus and ventilation systems primarily comprised of exhaust fans, hoods; exhaust air systems and air intake systems being ventilators for industrial purposes; gravity roof ventilators; smoke and heat extraction hood systems for industrial purposes; ventilation systems primarily comprised of exhaust fans, hoods; ventilating air intake louvres and weather protection grilles for ventilation apparatus and ventilation systems; chimney flues and installations for conveying exhaust gases; exhaust air filters for extractor hoods, being parts of commercial ventilation or air-conditioning systems.
Environmental Control ApparatusDevelopment, conception, planning and designing, testing and quality control in relation to industrial ventilation apparatus, exhaust air systems and air intake systems, air intake louvres and weather protection grilles for ventilation apparatus and ventilation systems, gravity roof ventilators, smoke and heat extraction systems, ventilation systems, silencers for ventilation apparatus, flues and installations for conveying exhaust gases, exhaust air filters for extractors
Computer and Scientific