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によって Lopolo 3600x2400 px
ストック写真ID: 64932803
Maintenance engineer checking technical data of heating system equipment in a boiler room
St. Petersburg, Russia - April 19, 2016: Electrician specialist conducts maintenance work on a high voltage transformer. Long probe fixes the wires for grounding.
A generator in a hospital with a repair men
A good serviceman working on a machine room
Repairman engineer of fire engineering system or heating system open the valve equipment in a boiler house
A great Man Technician servicing at work
Two repairmans engineer or inspector who check the system
Repairman engineer or inspector who check the system