It is reliable that electric performance is steady, it is good to able to bear weather performance Use in telephone communication, electronic signal transmitted and joined 1) Types: SYT, SYS, TESS, TESA, TRR, TRHR, VVT, PTT, SVV, others 2) 0.4mm, 0.5mm, 0.6mm, 0.65mm, 0.7mm, 0.8mm, others 3) Construction: a) Conductor: copper, tinned copper, steel clad copper b) Insulation: PE, PP, PVC c) Screening: aluminum foil, earth wire or no screening d) Jacket: LDPE, PVC, LOSH