1) Healthy, bacteriological neutral, conforming to drinking water standards 2) Resistant to high temperatures, good impact strength 3) Convenient and reliable installation, low construction expenses 4) Excellent heat-insulation property from minimum thermal conductivity 5) Lightweight, convenient to transport and handle, good for labor-saving 6) Smooth inner walls reduce pressure loss and increase flow speed 7) Sound insulation (reduced by 40% compared to galvanized steel pipes) 8) Light colors and excellent design ensure suitability for both exposed and hidden installation 9) Recyclable, environment-friendly, accords with GBM st