... : 20mm, 25mm, 32mm, 40mm, 50mm, 63mm,75mm, 90mm, 110mm5. Color: white, grey, green6. Certification: ISO9001-2008.Advantage:1. Sanitary, non-toxic ... .6. Long service life: more than fifty years under the normal pressure and temperature.Application:1. Residential cool/hot water piping ... heating equipment.8. Piping system for other industries and agriculture. high quality white/green DN25 ppr fittings