| Nature | Certification | Awarding organisation or authority | Period of validity |
| Quality Management System Accreditation | ISO 9001 : 2015 | Green Council |
12 September 2017 – 11 September 2020 |
| Safety Management System Accreditation | OHSAS 18001 : 2007 | Green Council |
12 September 2017 – 11 September 2020 |
| Environment Management System Accreditation | ISO 14001 : 2015 | Green Council |
12 September 2017 – 11 September 2020 |
| Energy Management System Accreditation | ISO 50001 : 2011 | Green Council |
10 November 2017 – 9 November 2020 |