IHI Corporation
TMEIC
Kawasaki Heavy Industries, Ltd.
Hitachi, Ltd.
Kubota Corporation
Hitachi Zosen Corporation
Kobe Steel, Ltd.
Bridgestone Corporation
Sakamura Machine Co., Ltd.
Mitsui E&S Holdings Co., Ltd.
NIPPON STEEL CORPORATION
Mitsubishi Heavy Industries, Ltd.
JFE Steel Corporation
Mitsubishi Electric Corporation
Sumitomo Heavy Industries, Ltd.
Yanmar Corporation
DAIHATSU DIESEL MFG.CO.,LTD.
总公司· 营业所
总公司 大阪营业部/海外营业部