1.PPR:China Yanshan Petro,Korea Hyosung 2.20mm-110mm 3.For home decoration,real estate project 4.OEM is ... , not scaling, no rust, anti-bacterial.3. Light weight, high strength and high impact strength.4. Lower cost compared with steel fitting ... heating equipment.8. Piping system for other industries and agriculture. high quality white/green DN25 ppr fittings