1. Impact strength:Resistant to compression and impact, suitable to be buried in concrete 2. Non-conductive:Good insulation, able to resist 25KV voltage, assuring a safe system 3. Fire resistance:with self-extinguishing function 4. Corrosion Resistance:Resistant to acids, bases and salts, assuring a lower maintenance cost and a longer performance life 5. Smooth surface:Small friction and high flow capacity to ensure the cables go through smoothly 6. Easy Installation:Light weight, easy to cut, transport, bent and handle; easy connecting by solvent cement and threading joining without leakage