ABB Ltd.; General Electric; Company Crompton Greaves Limited; Fuji Electric; Hitachi; Hyosung Corporation; Mitsubishi Electric Corporation; Toshiba Electric Corporation; Siemens AG; Eaton Corporation; Schneider Electric SE; China XD Electric Group Co. ltd; Henan Pinggao Electric Co. Ltd.; Hyundai Heavy Industry
Ltd; Nissin Electric; Shanghai Siyuan Electric Co. Ltd; BHEL; LSIS; Shenyang High-Voltage Switchgears Ltd; Energomash; New Northeast Electric Group High Voltage Switchgear Co. Ltd; Shandong Taikai High-volt Switchgear Co. Ltd; Larsen &Turbo; Hubbell
Powell Industries; Rittal; Meidensha Corporation; Iljin Electric; Ormazabal; Alstom SA; OJSC Power;