Polypropylene (PPR) rooj vag li qub yog corrosion thiab resistant, yooj yim rau nruab, thiab ua haujlwm zoo yam tsis muaj kev cuam tshuam. Lawv kuj tseem tiv taus siab thiab xeb, yog tsim los ua ib qho los tiv thaiv cov yeeb nkab tawg, thiab muaj lub zog ruaj khov heev.
