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Mitsubishi Materials Hardmetal Corporation held an opening ceremony for a new rock tools plant at its subsidiary OTEC (Thailand) Co., Ltd. in Phra Nakhon Si Ayutthaya, Thailand. The plant will double rod manufacturing capacity.
| Site | Largest | Latest |
|---|---|---|
| Phra Nakhon Si Ayutthaya, Thailand | 2025-10-28 |