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Close-up Iron welding close-up, sparks do not wear gloves. Welding sparks and fumes It can be dangerous to health. Welding of steel fireworks.
Sterile microbiological fume hood with stacks of Petri dishes and tube racks inside. A place for research and analysis.
Airliner with contrails flying in a clear blue sky with beautiful cumulus clouds or cumulonimbus. Photography, Full frame.
Working oil refinery. Smoke from the factory chimney. Ecological pollution. Air emissions polluting the city. Industrial waste is hazardous to health. Large factory in smog, Production in operation.
Industrial flexible tube hood and dust for suction smoke or fume of welding process or multipurpose use

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