| Company | Plant Location | MPa | Start Date | Expiry Date | Certificate |
|---|---|---|---|---|---|
| Beulah Services Limited | Opotiki | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Whakatane | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Bowers and Son Limited | Otorohanga | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Te Awamutu | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Bowers Brothers Concrete Limited | Hamilton | 40 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Matamata | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Morrinsville | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Paeroa | 40 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Putaruru | 40 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Riverhead | 50 | 01 Nov 2025 | 31 Oct 2026 | Download PDF | |
| Whitianga | 40 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Bridgeman Concrete Limited | City West | 50 | 01 Nov 2025 | 31 Oct 2026 | Download PDF |
| East Tamaki No. 1 | 50 | 01 Nov 2025 | 31 Oct 2026 | Download PDF | |
| East Tamaki No. 2 | 50 | 01 Nov 2025 | 31 Oct 2026 | Download PDF | |
| Hastings | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Napier | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Papakura | 50 | 01 Nov 2025 | 31 Oct 2026 | Download PDF | |
| Bullocks Readymix Limited | Whanganui | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Byfords Readi-Mix Limited | Taihape | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Waiouru (Satellite) | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |