... , 110mm5. Color: white, grey, green6. Certification: ISO9001-2008.Advantage:1. Sanitary, non-toxic, no heavy metal additives, directly apply to the ... , 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