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| アイキ |
Founding of Yoshimine Factory
Renamed the company and established Yoshimine Kikan Industrial Co., Ltd.
Announced our proprietary pipe-type boiler Model C-25.
Expanded overseas by constructing a bagasse-fired biomass boiler in Thailand.
Exhibited the HD-type boiler at the Osaka International Trade Fair.
Completed a new factory in Kyoto.
Developed pollution prevention devices such as flue gas desulfurization equipment and expanded into South America with a bagasse-fired biomass boiler construction.
Developed our own traveling stoker.
Developed a downward combustion biomass boiler with reduced emissions.
Successfully realized the practical use of an oil coke boiler with micro-fine coal multi-burner.
Became part of Myojo Industrial Co., Ltd. group and moved headquarters to Myojo Building in Kyomachi Hori.
Renamed the company to Yoshimine Co., Ltd.
Produced 3,000 cans with the new high-efficiency YSG boiler.
Constructed a large oil and gas incineration boiler in Egypt with a vaporization capacity of 240 tons per hour.
Obtained ISO 9001 certification and developed a paper sludge incineration combination combustion boiler.
Participated in the construction of a 10 MW rice husk incineration power plant in Thailand.
Received orders for two auxiliary boilers for nuclear power plant equipment; built a woodchip biomass power boiler in Hokkaido with a steam generation capacity of 70 tons per hour; delivered a 30 MW bagasse incineration biomass boiler for a power plant in Thailand.
Started construction of bagasse incineration biomass boilers on five islands in the Southwest Islands.
Published 'The 75-Year History of Yoshimine Boiler'.
Construction of biomass power plants utilizing the fixed power purchase agreement system has increased.
Held a ground-breaking ceremony at the Chubu office and began construction.
Completion of the Kameyama factory at the Chubu office.
At the annual general meeting of shareholders held today, changes were made to the board of directors. Satoshi Yamashita was appointed as a new director, and Norihiko Hirai retired. See the linked page for details.
Yoshimine Co., Ltd. closed its Hiroshima factory and Hiroshima branch at the end of March 2026 to optimize management resources through consolidation of manufacturing sites. The company expresses its deep gratitude for the support it has received.
Yoshimine Co., Ltd. was selected by the Japan Health Council on April 1, 2026, as a 2026 Outstanding Organization for Health and Productivity Management in the small and medium-sized organization category and named among the Next Bright 1000. The company will continue promoting health and productivity management.
At the annual general meeting of shareholders held today, Naoki Kodama retired as a director. See the linked page for details.
At the annual general meeting of shareholders held today, Shuji Kawaguchi and Yu Kameyama were appointed as new directors. Details are available at the linked page.
Yoshimine Co., Ltd. held a completion ceremony for its Kameyama Plant at the Chubu Business Office on May 15, 2024. The ceremony introduced the completed plant's functions and equipment, and attendees offered congratulatory remarks.
Yoshimine Co., Ltd. has opened recruitment for new graduates joining in 2025. See the official website for details.
The Makurazaki Biomass Power Plant was completed and began selling electricity to Kyushu Electric Power on October 1, 2020. Its opening ceremony was held on October 9. The plant burns woody fuel, mainly unused conifer material and bark from Kagoshima Prefecture, using a Yoshimine H-600 water-tube boiler that can handle moist, low-grade fuel. Japan Comsys served as EPC contractor. The plant contributes to local job creation and environmental conservation.
Tsuruoka Biomass Power Plant in the Shonai region of Yamagata Prefecture began full operation in late December 2015. It was jointly built by the Tsuruoka forestry cooperative, lumber company Tosen, and a wood-processing cooperative, and is the first biomass power plant in the area. The facility uses the same H-600 high-performance biomass boiler supplied by the company and can handle low-grade fuel.
Clean Energy Nara Yoshino Power Plant, equipped with an H-900 biomass boiler in Banzai, Oyodo Town, Yoshino District, Nara Prefecture, began operation on December 17, 2015. It is the first biomass boiler power plant in Nara and aims to provide clean electricity as an alternative to nuclear power for approximately 12,000 households.