Környezetvédelmi mérnökök dolgoznak szennyvíztisztító telepeken, vízellátó mérnökök dolgoznak a víz újrahasznosító telepen újrahasználatra, ellenőrizzék, hogy a vízben lévő klór mennyisége megfelel-e a kritériumoknak.. - Stock fotó és kép

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.

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

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.

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.

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

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

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

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

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

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

Maintenance technician at a heating plant,Petrochemical workers supervise the operation of gas and oil pipelines in the factory,Engineers put hearing protector At room with many pipes