Eskom Holding Soc Ltd has published publication of names of bidders. the provision of nonchemical treatment technologies (such as electrochemical, magnetic, vibration, alteration of surface charges, and mechanical disturbances such as vortex flow devices, ultrasound and sudden pressure changes) for cooling and ash water to prevent scaling and fouling for a period of twenty-two (22) months.. Bidders can get complete Tender details and download the document.