Ключевые слова: aeration, air, airconditioner, airconditioning, aluminum, background, building, cold, conditioner, conditioning, connection, connector, construction, cooling, different, drawer, duct, engineering, equipment, factory, fitting, gray, heat, hvac, industrial, industry, installation, installing, manufacture, metal, metallic, pile, pipe, pipeline, production, rectangular, silver, square, stack, steel, stock, storage, storehouse, system, tape, technology, tube, ventilate, ventilation, warehouse,