Styropanel is a lightweight styrene foam concrete wall panel faced with a cement sheet each side. It has a load bearing capacity and very smooth face surfaces. It can be used in domestic and commercial applications. it has a high surface "toughness" good STC and FRL ratings.
For more information visit their website at www.styropanel.com
The picture below shows 100 thick styropanels as external load bearing walls and 50mm thick panels for internal walls.