Activity room with a lightweight steel for the skeleton; with A-class fire rock wool board / foam panels for the building envelope materials; with standard module for space combination. The main components with bolts, the new concept of green economy housing. Its characteristics are: free entry 1. 2. 3. easy to transport, easy to move a safe and secure 4. 5. 6. Flexible layout for multiple turnover. Activities room according to customer requirements and design, housing the overall simple, nice, good insulation properties, economical and practical, an investment lifetime.