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Heating plant engineer inspecting pipes and valves before heating season.
Controlling water temperature and pressure in city heating plant.
Oil industry Concept with Two Color Flat Icons extraction production refinery and transportation oil and petrol. Isolated vector illustration
Pipeline infographic with blue and white. Oil, water or gas flat vector design.
Industrial background with yellow pipeline. Oil, water or gas pipeline with fittings and valves. Web banner template. Vector illustration in a flat style.

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