Certificates of management systems
| Company | Certificate | Status |
|---|---|---|
| ZETAS QATAR | BS OHSAS 18001:2007 | expired |
| ZETAS QATAR | ISO 14001:2015 | expired |
| Zetor Engineering Slovakia, a.s. | ISO 14001:2015 | valid |
| Zetor Engineering Slovakia, a.s. | ISO/IEC 27001:2013 | valid |
| Zetor Engineering Slovakia, a.s. | ISO 9001:2015 | valid |
| Zetor Engineering Slovakia, a.s. | AQAP 2110, Edition D:1 | expired |
| ZETOR Slovensko, s. r. o. | AQAP 2110:2009 | withdrawn |
| ZETOR Slovensko, s. r. o. | ISO 9001:2008 | withdrawn |
| ZEYON ELEKTRIK IMALAT TAAHHÜT SANAYI VE TICARET LIMITED ŞIRKETI | ISO 9001:2008 | withdrawn |
| ZIBANIT SRL | ISO 9001:2015 | withdrawn |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 |
| ZISIMOS GEORGIOS | ISO 22000:2018 | valid |
| Zito Recupero Plastica S.r.l. Unipersonale | ISO 45001:2018 | valid |
| Zito Recupero Plastica S.r.l. Unipersonale | ISO 9001:2015 | valid |
| Zito Recupero Plastica S.r.l. Unipersonale | ISO 14001:2015 | valid |
| Zivver | ISO/IEC 27001:2013 | valid |
| Zivver | CSA STAR:2021 | valid |
| Zivver | NEN 7510:2017 | valid |