Inżynierowie środowiska pracują w oczyszczalniach ścieków, mechanicy męscy pracują w wodociągach - Zdjęcie stockowe & obraz

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

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

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

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

Engineers work place to keep liquid helium,preventive maintenance schedule checking,Thailand people,Technicians and engineers discuss work together.

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

Engineers work place to keep liquid helium,preventive maintenance schedule checking,Thailand people

Engineers work place to keep liquid helium,preventive maintenance schedule checking,Thailand people,Technicians and engineers discuss work together.

Environmental engineers work at wastewater treatment plants,Water supply engineering working at Water recycling plant for reuse,Check the amount of chlorine in the water to be within the criteria.

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

Environmental engineer working at wastewater treatment plant, Water recycling plant for reuse

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

Environmental engineers work at wastewater treatment plants,Water supply engineering working at Water recycling plant for reuse,Check the amount of chlorine in the water to be within the criteria.

Engineer work place to keep liquid helium, preventive maintenance schedule checking

Engineers work place to keep liquid helium,preventive maintenance schedule checking,Thailand people