Structure of the drag chain: The drag chain resembles a tank track and is composed of numerous modular links that rotate freely relative to one another. Drag chains in the same series share the same internal height, external height, and pitch, while the internal height and bending radius R can be selected from different options. Each modular link consists of left and right side plates as well as upper and lower cover plates. Every link can be opened, making assembly and disassembly convenient—there is no need to thread cables through the chain; simply open the cover plate to insert cables, hydraulic hoses, pneumatic hoses, and other components directly into the chain. Additionally, partition plates are available to divide the internal space of the chain according to specific requirements.