Ключевые слова: background, barrel, blue, business, can, cans, chemical, cold, color, conveyor, design, empty, factories, factory, factory line, gray, grey, indoors, industrial, industry, line, liquid, machine, machinery, metal, metal steel, nobody, operation, operative, paint, paints, plant, process, processing, production, protective, quiet, rollers, safety, skylight, still, technology, tin, varnish, vent, wall paper, white, work, worker, yellow,