|1926||Kakusaburo Okamoto established the Okamoto Special Purpose Machine Tool Works.|
|1930||Completed the first domestic production of the Gear Grinder Model ASG-2.|
|1935||Changing of the organization and company name. Incorporated Okamoto Machine Tool Works, Ltd.|
|1953||Completed the first domestic production of the Surface Grinder Model PSG-6.
|1955||Developed the first domestic production of the External Blade Type Slicing Machine Model PSG-3Ge.|
|1963||Listed on Tokyo Stock Exchange, 2nd Section.|
|1968||Developed the world’s first CNC Surface/Profile Grinder Model NFG-5.|
|1972||Established Okamoto Corporation, a local subsidiary in Chicago, USA as a distributor.|
|1973||Established Okamoto (Singapore) Pte. Ltd., a local subsidiary in Singapore, the first to manufacture the machine tools locally.|
|1982||Annaka Plant in Gunma Prefecture completed and started production.|
|1987||Established Okamoto (Thai) Company Ltd., a local subsidiary in Thailand.|
|1992||Established Okamoto Machine Tool Europe GmbH, a subsidiary in Germany.|
|1994||Okamoto Singapore was ISO9002 certified (the first in the machine tool industry for the Asia region).|
|1995||Opened a branch in Singapore, as a sales and service base.|
|1997||Awarded with JSME (The Japan Society of Mechanical Engineers) Technology Award for developing a fully automatic vertical high precision surface grinder.
Awarded with JSAT (The Japan Society for Abrasive Technology) Technology Award for developing fully automatic high precision and high efficiency CMP equipments .
|2002||Established a representative office in Shanghai, China.|
|2005||Completed the Clean Room for testing and inspecting semiconductor equipments at the Annaka Plant.|
|2005||Completed the Okamoto Thai new assembly plant.|
|2005||Completed the processing and assembly booth with a constant temperature environment at the Annaka Plant.|
|2006||Completed the Spindle Room at the Annaka Plant.|
|2006||Completed the Okamoto Thai new casting plant. (With both new and old plants, the production capacity will be 1800 tons per month.)|
|2007||Completed the Okamoto Thai plating and coating plant.|
|2007||Completed the world’s largest Ultra-Precision Double Column Type Surface Grinder UDG10035NC in the hydrostatic pressure guideway system as Annaka Plant equipment.
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