|1986||The HIOKI Philosophy is adopted of Respect for Humanity and Contribution to Society.|
|1988||Employees hold a tree-planting festival at HIOKI Forest Hills, the site of the current Head Office.|
|1989||Forest Hills Scholarship Fund, a special public-interest trust, is launched.|
|1990||The Head Office and main plant are relocated to a newly completed facility at HIOKI Forest Hills in Ueda, Nagano Prefecture.|
|1991||The Ueda Minami League youth baseball program is launched.|
|1992||HIOKI receives the Japan Greenery Research and Development Center President’s Award in recognition of its active promotion of afforestation.|
|1995||The first Local Afforestation event is held at Kamishina Elementary School.|
|1997||South Junior Sports Club is launched.
HIOKI earns ISO 14001 certification.
|1998||HIOKI receives the Kanto International Trade and Industry Bureau Director's Award in recognition of its active promotion of afforestation.|
|2000||The first HIOKI Festival is held.|
|2003||Hioki begins donating musical instruments.|
|2004||HIOKI receives the 6th Shinshu Ecology Grand Prize in recognition of its Local Afforestation program.|
|2005||The HIOKI Scholarship and Greening Foundation is established.
HIOKI receives the Minister of Economy, Trade and Industry Award in recognition of its active promotion of afforestation
|2007||HIOKI begins supporting the Kenya Vegetation Restoration Project.|
|2008||HIOKI is recognized by the Minister of State for Measures for Declining Birthrate for distinguished service under the Supporting Children and Families in Japan program.|
|2009||HIOKI's main plant is recognized by the Prime Minister of Japan for distinguished service in promoting afforestation during 2009.|
|2011||HIOKI receives the 2011 Minister of Health, Labour and Welfare Encouragement Award in recognition of its safety and hygiene policies.|
|2012||HIOKI receives the Dark-blue Ribbon Medal in recognition of community service initiatives including its donation of musical instruments to an Ueda elementary school.|
|2013||Construction of the Health & Fitness Center is completed.|
|2015||Construction of the HIOKI Innovation Center, the company's new R&D facility, is completed.|
|2017||Construction of the HIOKI LodgeⅡ is completed.|