Auckland- B W Murdoch LtdNewmarket
- Horizon Technology Ltd
- ABB Industrial Automation & DrivesAuckland
- HBM (NZ) LtdManukau Central
- Peter Walker Consultants LimitedMairangi Bay
- W Arthur Fisher Ltd
Bay of Plenty- Bay Process Consultants LtdHairini
Otago- Actech Engineering LtdMaori Hill
Waikato- B W Murdoch LtdHamilton
- Metrology TechniquesTe Rapa
- Downer MBL LtdHamilton
- InvensysFrankton
- Systems Projects LtdFrankton
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