High Voltage Equipment and Power System Specialists. GTS is a leading supplier of electrical testing and commissioning services in Australia and the Asia Pacific region. Since Global Testing Services was founded, we have sourced and maintained contracts for some of the biggest companies in the world. Some of these include; BHP Billiton Rio Tinto Synergy Woodside Croesus Mining Barrick Mines Alinta Transocean PMDE International TEC Operations Origin Energy Clarke Energy Pilbara Iron Cummins Power Pride International Energy Generation SKM BEC Engeneering St Ives Gold Mining Company And many more. We are a quality endorsed company, and as such we constantly aim to improve our services, to better serve our customers. Give us a call today, and see how we can be of assistance.