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1.Indoor telephone cable and outdoor telephone cable,Type for HYV,HYY,HYYC
2. Adopt soft round copper wire as conductors, whose diameter includes 0.5, 0.6. 0.8mm
3.insulation:adopt one of flame retardant polyethylene,PVC and polyethylene according to different moel,
4.Line pairs:every two insulation conductor strands into pair according to the stated chromatogram.
5.Sheath :the technical spec of PVC sheath material is up to the standard of GB8815
telephone cable