It is composed of box body, internal structural parts, optical fiber splicing disc, optical add in piece and accessories. In the generic cabling system, the rugged and easy to install design reduces the installation and operation costs. The large front identification space is convenient for port identification and management. It meets the 19 'rack installation standard. At present, the product has been commercialized in many countries and regions around the world, bringing a number of values to operators: product features: modular, no fiber jump structure, floor mounted. The port capacity can be expanded by increasing the number of optical splitters flexibly. In addition, it is equipped with optical fiber fusion disk for the termination of the uplink optical cable and the connection of the optical cable branch, and the adapter for fiber storage is used for the storage and fixation of the uplink optical cable. Box material is made of high-quality cold-rolled plate (Q235-A), and the surface of the box is made of epoxy electrostatic spraying, which has corrosion resistance and aging resistance; product size: the required size can be customized;