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Ключевые слова:
alarm, alignment, background, blueprint, building, chemical, colorful, connection, control, equipment, extinguisher, factory, faucet, fighting, fire, flange, gas, heat, heating, industrial, industry, instrument, line, main, measurement, metal, oblige, pipe, pipeline, pipes, piping, plant, power, pump, red, safety, sprinkler, steel, supply, system, systems, tap, technology, tube, tubing, valve, wall, water,