... and UL444 of America.2)Product Description:Construction: multi-stranded tinned flexible copper, HDPE insulation, two insulated conductors twisted, ... retardant PVC or low smoke no halogen materialConductor: multi-stranded tinned flexible copper, diameter in 7*0.2mmInsulation: solid PolyethylenePairs ... 5)DiagramFrom upper to low: PVC Sheath, Insulation, Multi-strand Conductor, Cross, Rip Cord UTP Cat 6 ...