Simple space capsule, service life of up to 50 years, 150mm thickened walls, insulation layer using polyurethane insulation material; Hot-dip  galvanized steel pipe is used to build the keel, which is fully welded and sprayed with anti-rust paint. Good security and privacy, the door lock  adopts anti-theft A1 intelligent system, while equipped with the whole house smart home system, more quickly put into use.