A close-up photo of a worker filtering asphalt to repair and pave public streets in the Kingdom of Saudi Arabia, a laboratory for measuring and calibrating asphalt in the city of Riyadh, improving the quality of asphalt roads, advanced heavy machinery and equipment in factories.
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![A close-up photo of a worker filtering asphalt to repair and pave public streets in the Kingdom of Saudi Arabia, a laboratory for measuring and calibrating asphalt in the city of Riyadh, improving the quality of asphalt roads, advanced heavy machinery and equipment in factories.](https://cdn.arabsstock.com/uploads/videos/157949/thumbnail_UXbacdyXCiAjdob4FIio.jpeg)