Certificates of management systems
| Company | Certificate | Status |
|---|---|---|
| ZETOR Slovensko, s. r. o. | AQAP 2110:2009 | withdrawn |
| ZEYON ELEKTRIK IMALAT TAAHHÜT SANAYI VE TICARET LIMITED ŞIRKETI | ISO 9001:2008 | withdrawn |
| ZIBANIT SRL | ISO 9001:2015 | withdrawn |
| ZINKOZA, a.s. | ISO 9001:2008 | expired |
| ZINKOZA, a.s. | ISO 14001:2004 | expired |
| ZISIMOS GEORGIOS | ISO 22000:2018 | expired |
| Zito Recupero Plastica S.r.l. Unipersonale | ISO 14001:2015 | valid |
| Zito Recupero Plastica S.r.l. Unipersonale | ISO 9001:2015 | valid |
| Zito Recupero Plastica S.r.l. Unipersonale | ISO 45001:2018 | valid |
| ZMAQ S.A.C. | ISO 37001:2016 | valid |
| ZMO 91 EOOD | ISO 9001:2015 | withdrawn |
| ZMO 91 EOOD | ISO 45001:2018 | withdrawn |
| ZMO 91 EOOD | ISO 50001:2018 | withdrawn |
| ZOLUXIONES BPO S.A.C. | ISO 37001:2016 | valid |
| ZOOM SOFT SRL | ISO 9001:2008 | expired |
| ZOOM SOFT SRL | ISO 14001:2004 | withdrawn |
| ZSELIC-FARM KFT. | ISO 14001:2015 | valid |
| ZSELICTERV KFT. | ISO 9001:2015 | valid |
| ZSILLE KFT. | ISO 9001:2000 | withdrawn |
| ZTS TEES VOS, akciová spoločnosť | ISO 9001:2015 + ISO 3834-2:2005 | valid |