Xinsheng Dani Dragon towline structure (1) the towline shape like tanks chain unit link, the link between the turn freely. (2) of the same series towline inner, outer same pitch towline inner width, the bend radius R can have a different choice. (3) unit chain around the chain plate and the upper and lower cover, towline each section can be opened, easy assembly and disassembly without threading, open the cover to cable, tubing, trachea, water pipes into the towline . (4) other shim chain space separated as needed.