The outer case is constructed from 12MM multilayer plywood surfaced with black plain-pattern fireproof laminate. The joints of the aluminum profiles on all four edges of the top and bottom are secured by aluminum welding. It features side-pull sliding doors on both sides for convenient on-site storage and time efficiency. The internal frame is made of 5MM steel plates, fixed within the case by multiple rubber pads at the top and bottom to provide effective shock absorption during transport. The unit offers excellent overall impact resistance and dustproof performance.