Ключевые слова: above, aerial, background, blue, chemical, danger, design, distillery, down, energy, engineering, environment, equipment, factory, fuel, gas, hong, industrial, industry, kong, landscape, metal, oil, old, over, pipe, pipeline, pipes, piping, plant, pollution, power, processing, production, pump, refinery, sky, steel, storage, tank, technology, to kwa wan, top, top down, town, tube, view,