Cast as the wet concrete (Wet Process). So strong and durable. No water absorption. The sound is good.TheA wet cast concrete (Wet Process) to provide a durable , do not absorb water well soundproofed.
A wet cast concrete (Wet Process) to provide a durable , do not absorb water well soundproofed to A Wet cast concrete (Wet Process) to provide a Durable , do not absorb Water well soundproofed.