... : 20mm, 25mm, 32mm, 40mm, 50mm, 63mm,75mm, 90mm, 110mm5. Color: white, grey, green6. Certification: ISO9001-2008.Advantage:1. Sanitary, non-toxic ... . Piping system for purified water and drinking water.4. Production line system of beverage and liquid medicine.5. Solar heating and ... .8. Piping system for other industries and agriculture. high quality white/green DN25 ppr fittings