1. QA Dept., Japan Casting & Forging Corp.
2. R&D Dept, Japan Casting & Forging Corp.
3. Technology Dept, Japan Casting & Forging Corp.
4. Takasago R&D Center, Mitsubishi Heavy Industries, Ltd.
5. Takasago Machinery Works, Mitsubishi Heavy Industries, Ltd.
6. Takasago Machinery Works, Mitsubishi Heavy Industries, Ltd., now Osaka Yakin Kogyo Co.