... muti-tube ,with fiber and jelly2. with steel tape armored3.with messenger -steel wiresParameters:1) Multi-PBT Loose tube, filling ... be figure 8 structure.Material:Fiber,Fiber Gel,Loose Tube,Steel Plastic Tape,Water-blocking Material,PE sheathTechnical Parameters: Advantages: ... of fiber · PSP enhancing moisture-proof · Two parallel steel wires ensure tensile strength · Long delivery length and low ...