Ключевые слова: abstract, abstraction, air, allergen, allergy, auto, automobile, automotive, background, car, cardboard, change, circle, circulation, clean, cleaner, close up, closeup, coloured, conditioner, conditioning, design, detail, dust, element, equipment, filter, filtration, geometric, geometry, grid, hvac, lines, maintenance, motor, new, orange, paper, part, pattern, pollution, protection, repair, service, stripes, technology, texture, textured, ventilation, yellow,