This product is a terminal distribution device for optical fiber transmission networks, mainly used for optical cable fixation and fusion splicing between optical cables and pigtails, integrating functions of residual fiber storage, optical path deployment, and joint protection. Constructed from cold-rolled steel plates or PC+ABS materials, it can resist dust and moisture erosion. Supporting installation methods such as wall-mounting and desktop placement, it is compatible with various adapters (e.g., SC, FC) or pigtail through connections. With a clear internal layout and convenient construction & maintenance, it is widely applied in indoor optical fiber access scenarios such as local telephone services, data transmission, and CATV.