Songchen Steel’s expandable container houses are designed with the concept of "energy saving, environmental protection and high efficiency", and every detail reflects the company’s pursuit of high quality and high performance. The wall and roof of the expandable container house adopt a lightweight and high-strength composite structure, which reduces the overall weight of the product on the premise of ensuring structural strength, improving the transportation efficiency and reducing the transportation cost. The internal thermal insulation layer uses high-quality environmental protection thermal insulation materials, which have excellent thermal insulation performance and no harmful gas emission, complying with the international environmental protection standards and green building requirements. The expandable container house is equipped with a complete ventilation and lighting system, including large-area glass windows and ventilation fans, which can effectively improve the internal air circulation and lighting conditions, and create a comfortable and healthy living and working environment for users. The product is widely applied in the tourism and cultural tourism industry in Southeast Asia, and is transformed into characteristic homestays and outdoor camping bases with unique appearance design and comfortable internal decoration. The expandable design makes the space more spacious and flexible, and can meet the diverse needs of tourists for accommodation space. The company’s professional R & D team continues to carry out technical innovation and product optimization on expandable container houses, introducing new materials and new technologies to improve the performance and added value of the product, such as adding solar power generation modules and rainwater recovery systems to realize the self-sufficiency of energy and water resources, making the product more suitable for use in remote areas without power and water supply. With an annual sales revenue of more than 300 million US dollars, the company has sufficient capital and technical strength to carry out continuous R & D and innovation of expandable container house products, and constantly meet the changing market demand and customer needs. The expandable container house has the advantages of recyclability and reusability, and can be disassembled and recycled for many times after the project is completed, reducing construction waste and environmental pollution, in line with the global sustainable development concept.