Feature highlights: This 20ft, 30ft, or 40ft prefab modular container house is made from Q195/Q235/Q345 galvanized steel frame with EPS or rock wool sandwich panels, offering durability and environmental protection. It features a wind resistance of Grade 10, earthquake resistance of Grade 8, and a service life of 15-30 years. Customizable in size and color, it suits various applications like schools, hotels, offices, and homes. The product is CE-certified, ensuring compliance with EU safety standards and providing market access for buyers.