Lịch sử hoạt động môi trường
| 1995 | July | Demand-controller (equipment) introduced as part of energy-saving activities. |
| 1996 | March | Abolition and withdrawal of the ultrasonic washing machine using harmful substance (trichloroethane). |
| 1999 | April | Start of ISO 14001 attestation acquisition project. |
| November | Start of the recycling of scrap wood (packing wood). | |
| 2000 | January | Abolition and withdrawal of wastes incinerator (countermeasure against dioxin). |
| February | Establishment of environmental management manual. Establishment of environmental policy. Setup of the environmental purpose and an environmental target in 2000. |
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| April | Start of the environmental conservation activities in accordance with the environmental management system. | |
| July | Prohibition of use of harmful substance containing agent (sexavalent chrome) / Withdrawal of electrolysis burring machine. | |
| September | Acquisition of ISO14001 attestation (as whole company). | |
| October | Revision of environmental policy. | |
| 2001 | April | Revision of environmental policy. Setup of environmental purpose and environmental target in 2001. |
| September | The 1st periodical conformity assessment and registration (ISO 14001). | |
| 2002 | September | The 2nd periodical conformity assessment and registration (ISO 14001). |
| 2003 | September | The 1st renewal assessment and registration (ISO 14001). |
| 2004 | April | Amendment of environmental policy. |
| September | The 1-1 periodical conformity assessment and registration (ISO 14001). | |
| 2005 | June | Amendment of environmental policy. |
| September | The 1-2 periodical conformity assessment and registration (ISO 14001). | |
| October | Implementation of changing asbestos containing packings to non-asbestos. Completion of production system construction of products for the Restriction of Hazardous Substances (Rohs) of EU. |
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| 2006 | May | Recognized as Eco-business office in Nagoya. |
| September | The 2nd renewal assessment and registration (ISO 14001). | |
| 2007 | April | Amendment of environmental policy. |
| September | The 2-1 periodical conformity assessment and registration (ISO 14001). | |
| 2008 | September | The 2-2 periodical conformity assessment and registration (ISO 14001). |
| 2009 | April | Amendment of environmental policy. |
| September | The 3rd periodical conformity assessment and registration (ISO 14001). | |
| 2010 | September | The 3-1 periodical conformity assessment and registration (ISO 14001). |
| 2011 | September | The 3-2 periodical conformity assessment and registration (ISO 14001). |
| 2012 | ||
| September | The 4th periodical conformity assessment and registration (ISO 14001). Expansion registration(KOYOSUNTECH Co, LTD.) |
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| 2013 | September | The 4-1 periodical conformity assessment and registration (ISO 14001). |
| 2014 | February | Amendment of environmental policy. |
| April | Amendment of environmental policy. | |
| September | The 4-2 periodical conformity assessment and registration (ISO 14001). Expansion registration(KAWAKI MEASURING INSTRUMENT Co., LTD) |
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| 2015 | September | The 5th periodical conformity assessment and registration (ISO 14001). |
| 2016 | January | Amendment of environmental policy. |
| September | The 5-1 periodical conformity assessment and registration (ISO 14001). | |
| 2017 | September | The 5-2 periodical conformity assessment and registration (ISO 14001). |
| 2018 | January | The 6th periodical conformity assessment and registration (ISO 14001). |
| 2019 | January | The 6-1 periodical conformity assessment and registration (ISO 14001). |
| 2020 | February | Yoshitake Inc. switched to EMS Self-declaration instead of ISO14001. |
