| Company | Plant Location | MPa | Start Date | Expiry Date | Certificate |
|---|---|---|---|---|---|
| Aitkens Concrete Limited | Gisborne | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| All Concrete Services Limited t/a Bridgeman Concrete Manawatu | Palmerston North | 50 | 28 Aug 2025 | 31 Jul 2026 | Download PDF |
| Bridgeman Concrete Limited | Hastings | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Napier | 50 | 01 Aug 2025 | 31 Jul 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 | |
| East Coast Concrete Limited | Gisborne | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Firth Industries | Aotea Quay | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Belmont | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Hastings | 50 | 20 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Napier (Satellite) | 50 | 20 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Hawera | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| New Plymouth B | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Palmerston North | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Paraparaumu | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Levin (Satellite) | 50 | 04 Sep 2025 | 31 Jul 2026 | Download PDF | |
| Stratford | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Gray Bros Contractors Limited | Greytown | 45 | 11 Apr 2025 | 31 Jul 2026 | Download PDF |
| Greytown (New) | 45 | 10 Oct 2025 | 09 Jan 2026 | Download PDF | |
| Higgins Concrete Limited | Dannevirke | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Feilding | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Hastings | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Marton | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Otaki (New Plant) | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Porirua | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Te Matai | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Waingawa | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Waipukurau (New) | 50 | 01 Aug 2025 | 31 Oct 2025 | Download PDF | |
| Wellington | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Holcim (New Zealand) Limited | Hawera (Normanby) | 50 | 01 Aug 2025 | 31 Oct 2025 | Download PDF |
| Hawkes Bay | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Kiwi Point, Wellington | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Upper Hutt (Satellite) | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Masterton | 40 | 01 Aug 2025 | 31 Oct 2025 | Download PDF | |
| New Plymouth B | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Ohau | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Setters Line, Palmerston North | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| PERTH Concrete Limited | Wanganui | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Quality Roading and Services (Wairoa) Limited | Wairoa | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Ruapehu Concrete Limited | Taumarunui | 40 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Sandford Bros Limited | Hawera | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Taranaki Mix Limited | New Plymouth (New Plant) | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Terry's Concrete Limited | Te Horo | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Upper Hutt Ready Mix Concrete Limited | Upper Hutt | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Wright Tanks Limited | Palmerston North | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
