The rapid draining of rainwater via sewers has led to massive groundwater problems in many regions.
Eco-stone systems have achieved great success in this regard.
Grass paver stones are also part of the eco-stones.
These are mostly used in parking lots and public facilities
The cavities can be filled with both earth and gravel.

Wood concrete stones:

Wood concrete stones are certainly the best solution when it comes to ecology and sustainability.
They have many advantages for example, light weight, high fire protection classes, breathability with extreme weathering and frost resistance.
These stones are used in regions with increased seismic security but also along many motorways in the form of noise barriers.