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- Company Information
- Brief History
- 1960 SHINAGAWA PLANT (Now,Ryotec Corporation)
- 1981 GIFU PLANT
- 1998 Establishes OTEC(THAILAND)CO,.LTD.
- 2000 Establishes WEAR RESISTANT TOOLS PLANT
- 2000 Establishes ROCK TOOLS PLANT
- 2009 Establishes New OTEC(THAILAND) PLANT
