Ключевые слова: business, chemical, china, closeup, construction, corrugated, derrick, development, drilling, economy, energy, environment, equipment, facilities, industry, machinery, manufacturing, metal, mining, oil derrick, oil field, openair, operations, outdoor, petrochemical, production, pumping unit, pumps, reflection, reserves, resources, sea, sky, solid, steel, stents, technology, tools, traditional, water, wider field of vision,