The wiring channel, also known as the cable trough, pigtail trough, or fiber trough, is an industrial wiring product primarily used for laying optical fibers and cables in computer rooms. It is made of flame-retardant engineering plastic, aluminum alloy, or steel, with standard widths ranging from 120mm to 400mm and a height of 100mm. It supports non-standard customization [3] [5]. The origin of production includes Shanghai, and the product types include plastic fiber troughs and aluminum alloy fiber troughs [2-3].

The full-arc design ensures a fiber bending radius of >40mm, with a smooth surface free of burrs and no protruding screws inside. It is equipped with connectors such as tees, crosses, up-down connectors, and mobile outlet ports, allowing for flexible adjustment of the wiring path [1] [3]. Accessories such as grooves and outlet ports are made of flame-retardant materials and support installation in collaboration with cable trays, suitable for layouts directly above, below, or on the side of the computer room [3-4]. In open installation scenarios, flame-retardant B1-grade PVC wire trays are used, featuring ventilation and convenient modification characteristics