|1914||Established as Yagi Farm Tools at 23 Ohashi-machi, Takasaki.|
|1924||Relocated to Tsurumi-cho and reorganized as a partnership company YAGI INDUSTRIES.|
|1956||Main office is relocated to Namie-machi. New factory is established.|
|1960||Second factory is established at Shimokotori-machi, Takasaki.|
|1961||Incorporated with Capital of 5 million yen.|
|1963||Main office is relocated to Shimokotori-machi, Takasaki.|
|1965||Capital is increased to 10 million yen.|
|1966||New forging line in the first main factory; a new press line, capacity of 1,600 tons, and a sequential annealing furnace are installed. Capital is increased to 30 million yen.
Designated as Gunma Prefecture's smaller business model factory.
|1968||New factory is established at 3121 Kuragano-machi, Takasaki. Main factory is relocated.|
|1970||Renamed to YAGI INDUSTRIES CO., LTD. Capital is increased to 45 million yen.|
|1975||Second forging factory is established at a new extension of the main factory.
Forging press of 1,600 tons (line 5) , 2,500 tons (line 6) , and a sequential annealing furnace (No. 4 furnace) are added. Capital is increased to 49.5 million yen.
|1977||Forging press of 1,600 tons (line 7) is added at main factory. Capital is increased to 59.5 million yen.|
|1981||Designated as a smaller business rationalized model factory.
An automated forging press (line 9), capacity of 1,800 tons, is added at main factory.
|1984||An automated forging press (line 10), capacity of 3,000 tons, a hot multistage former (line 11), an automatic sphere annealing furnace , and a shot blast machine are added at main factory.
Capital is increased to 77.22 million yen.
|1987||Main office (2-story Ferro-concrete building) is remodeled.|
|1988||An automatic forging press (line 12), capacity of 1,600 tons and two diesel generators of 1,500kW each are added at main factory. Capital is increased to 88.88 million yen.|
|1990||An automatic forging line (line 13), capacity of 2,500 tons, is added at the main factory.|
|1991||A shearing machine, capacity 380 tons is added and a forging press (line 7), capacity 1,600 tons, is renewed.|
|1992||First machining center is established at main factory.|
|1993||Second machining center is added at main factory.|
|1994||A NC lathe (TF20) is installed at main factory.
A gate type-machining center is installed at main factory.
|1995||An automatic forging press (line 14), capacity 2,500 tons and a NC lathe are added at main factory.|
|1997||NC machining factory (M3) is established at main factory.|
|2001||An automatic forging press (line 15), capacity of 3,800 tons and a shearing machine, capacity 450 tons, are added at main factory.
Acquisition of [ISO 9001:1994] Certification.
|2003||Acquisition of [ISO 9001:2000] Certification. Machining Line for HUB (4 lines) are installed in M3 Plant.
Yagi Poland Factory (YPF) was established in Zarow, Poland.
|2007||Acquisition of [ISO 14001:2000] Certification.
Machining Line for HUB (2 lines) are installed in M2 Plan.
|2008||NSK-Yagi Precision Forging (Zhangjiagang) Co., Ltd. (NYF) was established in Zhangjiagang, China.|
|2010||An automatic forging press (line 16), capacity of 4,000 tons is added at F4 factory.|
|2011||A large ring rolling mill and a hydraulic press are added.|
|2014||Ceremony of the 100th anniversary in business was celebrated on March 1.|
|2018||Dissolved the joint venture with Ensi Kebamu Precision Forging (Zhangjiagang) Co., Ltd.|