Water Plumbing 1>Material:Yanshang PPR(Beijing) 2>Size:20,25, ... 32,40,50,63,75,90,110mm 3>Cert.:ISO9001-2008,CE 4>OEM service Water ... Plumbing 1>Material:Yanshang PPR(Beijing)2>Size:20,25,32 ... be used in the piping system of pure water and drinking waterAnticorrosion, anti-encumbrance: using the ... least 50 years under normal use ppr water pipe