This super-long heavy-duty injection molding protection safety box is suitable for long sets of gear wrench, large long industrial detection instruments, long film and television slides, long fishing gear and other large long-bar equipment, external size 1612515220mm, internal size 1543457200mm, and the net weight of the box 13.55KG. The box adopts thickening and modified PP polypropylene high-pressure injection molding, the whole body multi-layer cross-three-dimensional reinforcement of the reinforcement structure, with a number of sets of self-locking spring locking, box cover surround rubber seal, to achieve IP67 waterproof dustproof, heavy load anti-wrestling anti-pressure military protection standards. The large-scale deep layered inner compartment can be selected as needed with the box cover wave buffer cotton, layered hand tear sponge, CNC integrated molding positioning lining, can fully accommodate a number of long sleeves, a complete set of long rod detection equipment, long professional equipment. High-strength sealed housing suitable for repair, field mapping, film and television crew, long-distance aviation logistics consignment all scene, buffer sealing double protection, to avoid heavy hardware, precision long strip instrument bump deformation, moisture rust.