Aasian insinööri lasit työskentelevät kattilahuoneessa, huolto tarkkailun tekniset tiedot lämmitysjärjestelmän laitteet, Thaimaa ihmiset - Kuvapankin valokuva ja kuva

Asian engineer wearing glasses working in the boiler room,maintenance checking technical data of heating system equipment,Thailand people

Asian engineer wearing glasses working in the boiler room,maintenance checking technical data of heating system equipment,Thailand people

Asian Maintenance engineer at the waste water management system of a huge factory,maintenance checking technical data of heating system equipment,Thailand people

The senior engineer is checking the answers of the cooling system for the safety of the system

Asian engineer wearing glasses working in the boiler room,maintenance checking technical data of heating system equipment,Thailand people

Environmental engineers work at wastewater treatment plants,Male plumber technician working at water supply

Asian Maintenance engineer at the waste water management system of a huge factory,maintenance checking technical data of heating system equipment,Thailand people

Asian engineer wearing glasses working in the boiler room,maintenance checking technical data of heating system equipment,Thailand people

Asian engineer wearing glasses working in the boiler room, maintenance checking technical data of heating system equipment

Asian engineer wearing glasses working in the boiler room,maintenance checking technical data of heating system equipment,Thailand people

Asian engineer wearing glasses working in the boiler room,maintenance checking technical data of heating system equipment,Thailand people

Asian engineer wearing glasses working in the boiler room,maintenance checking technical data of heating system equipment,Thailand people

Asian engineer wearing glasses working in the boiler room,maintenance checking technical data of heating system equipment,Thailand people