1. Steel Research Laboratories, Nippon Steel & Sumitomo Metal Corporation
2. Advanced Technology Research Laboratories, Nippon Steel & Sumitomo Metal Corporation
3. Osaka Steel Works, Nippon Steel & Sumitomo Metal Corporation
4. Yawata R&D Laboratories, Nippon Steel & Sumitomo Metal Corporation
5. Yawata Works, Nippon Steel & Sumitomo Metal Corporation