 | EN/ISO
9001/2000 | EN/ISO
14001 | ISO/TS
16949 | EN/ISO
17025 |
| Gruppenzertifikat (alle Werke) | | | | |
| Heerbrugg, CH | | | | |
| Altstätten, CH | | | | |
| Flawil, CH | | | | |
| Valence, FR | | | | |
| Fontanafredda, IT | | | | |
| Leeds, GB | | | | |
| Turnov, CZ | | | | |
| Reading, US | | | | |
| Wyomissing, US | | | | |
| Medina, US | | | | |
| Oakville, CN | | | | |
| Oberursel, DE | | | | |
| Korneuburg, AT | | | | |
| Jánossomorja, HU | | | | |
| Lohja, FI | | | | |
| Lorenskog, NO | | | | |
| Strängnäs, SE | | | | |
| Althengstett, DE | | | | |
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