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Unrecognizable male welder with protective facial mask and gloves welding a piece of metal in a factory
3D illustration architecture building construction perspective design,abstract modern urban building line drawing.
Gas fired power plant and factory building at night. Also called gas fired power station or natural gas power plant. That technology to burn natural gas and generate electricity or electrical energy.
A group of construction workers are shaking hands. The workers are wearing safety vests and hard hats
industry icons over white background. vector illustration.Vector industrial buildings and factories

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