Steel, metal, and chemistry

• Nippon Steel & Sumitomo Metal Corporation.
  JFE Steel Corporation
• Kobe steel,Ltd.
  Nisshin Steel CO.,Ltd.
• POSCO,Inc.
  Dongkuk Steel Mill CO.,Ltd.
• Godo steel,Ltd.
  TOPY INDUSTRIES,LIMITED
• JFE article steel incorporated company
  Furukawa-Sky Aluminum Corp.
• KYOEI STEEL,LTD
  Takunan Steel Co., Ltd.
• OSAKA STEEL.CO.,LTD.
  UBE INDUSTRIES, LTD.
• Mitsubishi Materials Corporation
  Oji Steel Co., Ltd.
• Asahi Kasei Corporation
  TOYOBO CO.,LTD.
• Nippon Steel ＆ Sumikin Stainless Steel Corporation
  POSCO JAPAN Co.,LTD

Plants, Energy, Environment, Machinery, Transportation, and others

• Mitsubishi Heavy Industries, Ltd.
  Hitachi, Ltd.
• Kawasaki Heavy Industries, Ltd.
  IHI Corporation
• Hitachi Zosen Corporation
  Sumitomo Heavy Industries,Ltd.
• Mitsubishi-Hitachi Metals Machinery,Inc
  Kamigumi Co.,Ltd.
• JP Steel Plantech Co.
  NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD.
• Nippon Steel & Sumikin Logistics Yahata Co., Ltd.
  Kyushu Electric Power Company, Incorporated
• JFE Logistics Corporation.
  JFE Engineering Corporation
• Shinko Engineering ＆ Maintenance CO.,Ltd
  Marubeni Proteches Corporation
• JFE Mechanical Co., Ltd.
  Kanematsu Trading Corporation
• Mitsubishi Heavy Industries Enviromental & Chemical Engineering Co,Ltd.
  TAKUMA CO.LTD