Ключевые слова: black, blue, business, concrete, cooling towers, design, energy, energy efficiency, engine, engineering, equipment, factory, fans, fuel, gas, gear, heavy, industrial, industry, insulation, machine, machinery, manufacturing, metal, metallic, oil, pipe, pipeline, pipes, piping, plant, power, pressure, pressure gauge, production, pump, refinery, rigging, sensor, stainless, steam, steel, supply, technology, transportation, tube, valve, valves, worker, workshop,