Certificates of management systems
| Company | Certificate | Status |
|---|---|---|
| 4D SISTEM TICARET LIMITED ŞIRKETI | ISO 9001:2008 | withdrawn |
| 4i ODC Private Limited | ISO 9001:2008 | withdrawn |
| 4M SOLUTIONS | ISO 9001:2000 | withdrawn |
| 4M SYSTEMS s.r.o. | AQAP 2110, Edition D:1 | valid |
| 4S ENTERPRISE PTE. LTD. | ISO 45001:2018 | valid |
| 60-MAX, s.r.o. | ISO 14001:2004 | expired |
| 60-MAX, s.r.o. | ISO 9001:2008 | expired |
| 625 Rena Agents | ISO 14001:2004 | expired |
| 625 Rena Agents | ISO 9001:2008 | expired |
| 631 Rena Agents | ISO 14001:2004 | withdrawn |
| 631 Rena Agents | ISO 9001:2008 | withdrawn |
| A - Team security, a.s. | ISO 9001:2008 | expired |
| A 2 Z SERVICES | ISO 9001:2000 | withdrawn |
| A DESIGN & DETAILS (INTERIORS) PVT. LTD. | ISO 9001:2000 | withdrawn |
| A R E S , s.r.o. | ISO 9001:2015 | valid |
| A R E S , s.r.o. | ISO 14001:2015 | valid |
| A STAR SAFETY CENTRE PTE. LTD. | BS OHSAS 18001:2007 | expired |
| A STAR SAFETY CENTRE PTE. LTD. | ISO 9001:2008 | expired |
| A STIVAKTAKIS & Co O.E | ISO 9001:2015 | valid |
| A-ONE ENGINEERING WORKS | ISO 9001:2008 | withdrawn |