Factory background with concrete floor, night scene. Aerial view of chemical oil refinery plant, power plant on blue sky background. Spare parts and electronic components packed in soft red film with air bubbles . Isolated with patch industrial macro computer random access memory (RAM) sticks close up Electrical energy distribution substation in a wastewater treatment plant Liquid plunger pump positive displacement type to transfer liquid from vessel to sea line pipe at offshore oil and gas wellhead remote platform. wires in electrical panel