- http://www.geographx.co.nz
- 04 473 2718
- The Dominion Observatory, 34 Salamanca Road, Kelburn, Wellington
- http://www.gibbsindustries.co.nz
- 07 847 8193
- 82 Duke Street, Frankton, Waikato
- http://www.gilpin.co.nz
- 09 361 4730
- Level 1, 14 Maidstone Street, Grey Lynn Auckland
- http://www.geongroup.com
- 03 384 2903
- 6 Mary Muller Drive, Christchurch
- http://www.gibsonoconnor.co.nz
- 09 570 3300
- 54 Lunn Avenue, Mount Wellington, Auckland
- http://www.giltrapfm.co.nz
- 07 873 4004
- 1 Progress Drive, Otorohanga, Waikato