History
| 1990 | January | Established Kawaguchi Ace Industry Co., Ltd. Capital 10 million yen Manufacturing and sales of geological survey equipment |
|---|---|---|
| 2002 | March | Increased capital to 40 million yen |
| 2002 | April | Changed company name to OYO Geo-monitoring Service Corporation Started new business for field testing, measurement and rental |
| 2002 | July | Increased capital to 150 million yen |
| 2005 | May | Joined the Kanto Geotechnical Consultants Association |
| 2007 | December | ISO 9001 certification registration (scope of certification: rental business for geological survey related equipment) |
| 2009 | September | Reduced capital to 100 million yen |
| 2014 | May | Acquired patent for borehole loading test equipment (Patent No. 6218079) |
| 2015 | January | Registered as a Geological Surveyor |
| 2018 | February | Regarding AUTOLLT2 borehole loading test equipment that does not use high pressure gas Registered in NETIS (Registration No. KT-170091-A) |
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