• ENEOS Corporation
  • JX Nippon Mining & Metals Corporation
  • PAN PACIFIC COPPER CO., LTD.
  • JX Metals Trading Co., Ltd.
  • Kasuga Mines Co., Ltd.
  • NIPPON EXPRESS CO.,LTD
  • Nittetsu Mining Co., Ltd.
  • Acids Co., Ltd.
  • DOWA ECO-SYSTEM CO., LTD.
  • JFE LOGISTICS CORPORATION
  • Yoshino Gypsum Co.,Ltd.
  • TOSOH LOGISTICS CORPORATION
  • NISSIN CORPORATION
  • SUMITOMO CORPORATION
  • Summit CRM, Ltd.
  • Marubeni Corporation
  • MITSUI & CO., LTD.
  • Sanyo Shipping Co.,Ltd.
  • ITOCHU Corporation
  • Minato Transportation Co., Ltd.
  • Azuma Shipping Co., Ltd.
  • NIPPON STEEL LOGISTICS CO.,LTD.
  • Akita Kairiku Co.,Ltd.
  • Naikai Trading Co.,Ltd.
  • Sumitomo Forestry Co., Ltd.
  • Open Bay Timber Ltd.
  • LS-Nikko Copper Inc.
  • CS Marine Co., Ltd
  • Korea Zinc Company, ltd
  • Mitsubishi Shoji Chemical Corporation
  • MITSUI MINING & SMELTING CO.,LTD.
  • MITSUI KINZOKU TRADING CO., LTD.
  • Sojitz Corporation