Advantages: Non-toxic: no heavy metal additives, would not be covered with dirt or contaminated by bacterium Corrosion Resistant: resist chemical matters or electron chemical corrosion Lower Installation Costs: light weight and ease of installation can reduce installation costs by as much as 50% over metal piping system Higher Flow Capacity: smooth interior walls result in lower pressure loss and higher volume than metal pipe Longevity: more than 50 years under proper use Recycled and Environment-friendly