| Company | Plant Location | MPa | Start Date | Expiry Date | Certificate |
|---|---|---|---|---|---|
| Allied Concrete Limited | Hautapu | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| 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 | |
| Whitianga | 40 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Eastern Bay Concrete (2014) Limited | Opotiki No. 2 | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Ecomax RMC Limited | Hamilton | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Firth Industries | Hamilton A | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Hamilton B (Satellite) | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Katikati | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Mount Maunganui A | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Mount Maunganui B New (Satellite) | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Rotorua | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Taupo | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Te Awamutu | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Thames | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Tokoroa | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Whakatane | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Whangamata | 50 | 01 May 2025 | 31 Jan 2026 | Download PDF | |
| Higgins Concrete Limited | Taupo | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Tauranga | 50 | 01 Aug 2025 | 31 Jan 2026 | Download PDF | |
| Holcim (New Zealand) Limited | Horotiu | 50 | 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 | |
| Rotorua (New Plant) | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Taupo | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Tauranga | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Whakatane | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Whitianga | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Hynds Pipe Systems Limited | Pokeno | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Mix Up Concrete Limited | Tauriko | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Mix Up Concrete (Rotorua) Limited | Rotorua | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Precision Ready Mix Limited | Cambridge | 50 | 29 Jul 2025 | 31 Jan 2026 | Download PDF |
| Readyset Concrete Ltd t/a Waikato Ready Mix | Riverlea | 50 | 01 May 2025 | 31 Jan 2026 | Download PDF |
| Westbay Concrete Limited | Te Puke | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |
| Katikati (Satellite) | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |