Intertek PolychemlabGELEEN, NLScope: "...tric method 4248 NEN-EN-ISO 1133 (2005) GLN 28 Polypropylene and polypropy..."RvA1certView
Kiwa NederlandRIJSWIJK ZH, NLScope: "...DVGW W544; ISO 10147; EN-ISO 1133-1; ISO 2781; DIN 53357; DVGW GW335-A1; EN-ISO..."RvA1certView