Certificates of management systems
| Company | Certificate | Status |
|---|---|---|
| TERMOTECNICA SEBINA S.r.l. | ISO 45001:2018 | valid |
| TERMOTECNICA SEBINA S.r.l. | ISO 50001:2018 | valid |
| TERMOTECNICA SEBINA S.r.l. | ISO 14001:2015 | valid |
| TERMOTOTAL PROD SRL | ISO 9001:2015 | valid |
| TERMOTOTAL PROD SRL | ISO 45001:2018 | valid |
| TERMOTOTAL PROD SRL | ISO 14001:2015 | valid |
| TERRA ASTER SRL | ISO 9001:2015 | valid |
| TERRA BUILDING SRL | ISO 9001:2015 | valid |
| TERRA BUILDING SRL | ISO 45001:2018 | valid |
| TERRA BUILDING SRL | ISO 14001:2015 | valid |
| terra m, s.r.o. | ISO 9001:2015 | valid |
| Terra Transilvania Kft. | ISO 14001:2004 | withdrawn |
| Terra Transilvania Kft. | ISO 9001:2008 | withdrawn |
| Terra Transilvania Kft. | BS OHSAS 18001:2007 | withdrawn |
| TERRA TRANSLATION PARK SRL | ISO 9001:2015 | valid |
| TERRA WORLD CORPORATION S.A.C. | ISO 37001:2016 | suspended |
| TERRAMAQ CONTRATISTAS GENERALES S.A.C. | ISO 37001:2016 | valid |
| TERREX KFT. | ISO 9001:2008 | withdrawn |
| Tesla Elektro Kft. | ISO 45001:2018 | valid |
| TESLA ENGINEERING & CONSTRUCTION PTE. LTD. | BS OHSAS 18001:2007 | withdrawn |