Ключевые слова: air, carbon, chemical, clean, climate, conservation, earth, eco, ecology, electricity, energy, engineering, environment, environmental, factory, footprint, friendly, fuel, gas, global, good, green, industrial, industry, innovation, low, manufacture, manufacturing, nature, oil, outdoor, ozone, petrochemical, petroleum, plant, pollution, power, production, protection, recycle, recycling, refinery, renewable, save, sky, sustainability, technology, tower, tree,