Quinfert is the Fertiliser Division of Quin Environmentals (NZ) Ltd (QE for short). QE is the private company of Dr Bert Quin and represents Dr Quin's interests in a wide range of projects. It is also the vehicle for consultancy in New Zealand and overseas, except in Australia. Dr Quin owns a related company Quin Environmentals Pty Ltd which operates in Australia. Other divisions of QE include Quinplan (Farm Environment Plans) and Fertiliser Advice. Bert Quin is also a major shareholder in Pastoral Robotics Ltd (the producer of Spikey®) and Global Sustainable Farming Ltd, the developer of ONEsystem.