• Hitachi
Ltd.
• Mitsubishi Electric Corporation
• Siemens Energy AG
• General Electric Company
• Prysmian Group
• Toshiba Corporation
• NKT Photonics A/S (NKT A/S)
• Nexans S.A.
• LS ELECTRIC CO. Ltd
• NR Electric Co. Ltd. (NARI Technology Development Limited Co.)