<http://schema.org/about>
"PPR, Random Copolymer Polypropyline, pipe system for potable water. Savings derived from replacing to traditional copper tubing."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bibliocad.com/library/potable-water-ppr-pipe-system,-mexico--random-copolymer-polypropylene_40880>