◇ Large temp-resistant  area,high   
      strength compression resistance
◇ Anticorrosion, water hammer 
      noise free
◇ Smooth interior pipe surface, low 
      fluid resistance, large outpouring 
      capacity.
◇ Over 50 years of life cycle
◇ Clean and sanitary, no oxygen 
      seeping
◇ Antistatic, fire retardant, frost 
      resistant, shock resistant
◇ Easy to bend, no rebound
◇ Light self-weight, easy to carry 
      and store
◇ Few sockets, leakage decreasing
◇ Easy to install, extensive 
      applicability