Features Healthy and non-toxic, free of stain and scale. High temperature resistance (maximum water temperature up to 90) and pressure resistance (over 5MPa). Hot melting connection makes the pipes and fittings into on body, so leakage is effectively prevented. Excellent heat-insulation property from minimum thermal conductivity (only 1/200 of that of metal pipes). Light weight (approximately 1/8 of weight of metal pipes), easy to handle and transport. Smooth inner walls reduce the pressure loss and increase the flow speed. Low noise (reduce by 40% compared to galvanized steel pipes). Soft colors and excellent design are suitable for installation either exposed or hidden. Excellent ability in chemical corrosion resistance. Easy and fast installation minimizes your cost. Over 50 years of service life under normal condition.