|1929||Uichi Yuki founded Yuki Mfg. Works, an automobile repair shop in Tokyo.|
|1931||Started manufacturing machine tools.|
|1940|| Succeeded in producing hydraulic honing machines.
Succeeded in producing hydraulic vane pumps and various types of hydraulic control valves, buildeing up s base as a manufacturer of hydraulic equipment.
|1945||Founded Yuki Mfg. Ibaraki Fukuroda factory.|
|1952||Founded Yuatsukiki Kenkyujo and started bussiness as a hydraulic equipment manufacturer. Capital:￥1.2 million.|
|1956||Reorganized into Yuken Kogyo Co., Ltd. Capitall:¥6 million.|
|1959||Founded the sales company Yuhan Hydraulics Co., Ltd.
(current Yuken Kogyo Co., Ltd. Osaka office)
Built the Fujisawa factory.
|1962||Listed its stock on the Second Section of the Tokyo Stock Excahnge.Capital:¥190 million.|
|1964||Moved the head office to Fujisawa, Kanagawa Prefecture.|
|1967||Opened the Tokyo office.|
|1969||Fouded Taiwan Hydraulics Mfg. Co., Ltd. (joint venture).|
|1970||Founded Osaka Yuken Co., Ltd.|
|1970||Opened the Research & Development Center and the Sagami factory in Kanagawa Prefecture(current Sagami factory).|
|1970||Listed its stock on the First Section of the Tokyo Stock Exchange. Capital:¥1.2 billion.|
|1976||Founded Yuken India Ltd. (joint venture).|
|1978||Founded Yuken Kogyo (Hong Kong) Co., Ltd.|
|1979||Founded Hokuriku Yuken Co., Ltd. (sales company).|
|1980||Founded Yuken (U.K.) Ltd. in the United Kingdom.|
|1984||Installed a large hydraulic system works in the Sagami factory.
Renamed the factory as the Sagami plant.
|1986||Opened the No.1 Component Assembly Center in the Sagami plant.|
|1987||Founded Yuken Service.Co., Ltd.|
|1992||Founded Yuci Yuken Hydraulics Co., Ltd. (joint venture), in China.|
|1992||Opened the No.2 works in the Fukuroda factory.|
|1992||Opened the Technical Center in the Sagami plant.|
|1996||ISO 9001 Certification obtained.|
|1997||Absorbed Yuken Hymex Co., Ltd.|
|2001||Founded Yuken Hydraulic (Dongguang) Co., Ltd. in China.|
|2004||Moved the head office to the Sagami plant. Integrated the Fujisawa factory into the Sagami plant. Built a new factory in Sagami (Head Office and Sagami Plant).|
|2005||ISO 14001 Certification obtained.|
|2006||Founded Yuken Hydraulics (Zhangjiagang) Co., Ltd. in China.|
|2007||Founded Yuken Korea Co., Ltd.|
|2010||Founded Yuken Kgyo (Shanghai) Co., Ltd.|
|2012||Founded YUKEN SEA CO., LTD. in Thailand.|
|2013||Founded Yuken Kogyo (Foshan) Co., Ltd.|