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Top mix permeable and porous concrete slab

A porous concrete slab that lets the water passed through it. Using this concrete, we can get rid of the extra water problems inside the porous concrete. The top mix of permeable technology can be used to make roads that let the water draining into the central hole incredibly fast. Now the roads will stay clean and dry, no matter how fast it is raining. Using this technology not only roads in the big cities will remain clean, but it can save people's house from the floods due to heavy rains.