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technician engineer working to maintenance a construction equipment industry, production technology in plant factory, man working to safety control system in manufacturing product factory
Car mechanic holding in hand old dirty paper fuel filter on gas station background. Clogged Box diesel fuel filter. Poor fuel quality led to expensive car repairs
Inspection engineer air chillers the cooling towers in building.
Two female scientists or technicians with face protective masks work in laboratory on human blood samples.
Portrait of a technician smiling at the camera with arms crossed and leaning against a lathe cutting machine.

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