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    1916~
| 1916 | Electric Steel Manufacturing Co., Ltd was established. Production of alloy and tool steels started. |   Founder Momosuke Fukuzawa | 
| 1917 | Momosuke Fukuzawa assumed the president of Electric Steel Manufacturing Co., Ltd. | |
| 1919 | Kiso Electric Steel Manufactruing altered corporate name to Kiso Electric Kogyo. | |
| 1921 | Steel division of Daido Electric Power Co., Ltd. separated to form Daido Steel Co., Ltd. | |
| 1934 | Merged with Teikoku Spring. | |
| 1937 | Hoshizaki Plant began operation. |   
                                                    Hoshizaki Plant
                                                 | 
| 1941 | Merged with Tominaga Kogyo | 
1950~
| 1953 | Takakura Plant began operation. | |
| 1955 | Merged with Shin Riken Kogyo. | |
| 1957 | Merged with Tokyo Seikosho. | |
| 1958 | Daido’s high-tensile steel used for television antenna section of Tokyo Tower | |
| 1959 | Hoshizaki Plant and Tsukiji Plant were submerged by the Ise Bay Typhoon. |   
                                                    Chita Plant complete ceremony
                                                 | 
| 1963 | Move Head Office to Kogin bldg. | |
| Chita Plant began operation. | ||
| 1964 | Merged with Kanto Seiko. | |
| 1965 | The first U.S. Office was opened. | |
| 1976 | Merged with Japan Special Steel and Tokushu Seiko. | |
1980~
| 1980 | Continuous caster began operation at Hoshizaki Plant and Chita Plant. | |
| 1981 | Chita Steel Strip Plant began operation. | |
| 1988 | The American Society for Metals designated the 1.5 ton electric arc furnace (Héroult type) as a historical landmark. | |
| 1990 | Nakatsugawa Techno Center was opened. |   
                                                    Vertical continuous caster (Chita plant) | 
| 1991 | In business 75 years, announced management principle | |
| 1992 | Large section, vertical continuous caster began operation at Chita plant for the first time in Japan. | |
| 1995 | Hong Kong Office was opened. | |
| 1997 | Bangkok Office was opened. | |
2000~
| 2001 | Steckel mill was introduced into Hoshizaki Plant. Production of high-grade strip steel started with the integrated manufacturing process. | |
| 2002 | Comprehensive casting manufacturer Daido Castings founded | |
| 2003 | High speed precision forging machine “AMP70XL” into Cihta forging plant. | |
| Move Tokyo Head Office from Nishi Shimbashi to Shinagawa. | ||
| 2004 | Promissing Hybrid Caster began operation at Chita Plant. | |
| Shanghai Office was opened. | ||
| 2005 | Guangzhou Office was opened. | |
| Move Head Office from Fushimi to Hisaya-odori. |   
                                                  150 ton electric arc furnace
                                               | |
| 2006 | The accumulated quantity of melting at Chita plant since its startup reached 50 million tons. | |
| 2008 | 7000t press machine began operation at Shibukawa Plant. | |
| 2009 | Concentrator photovoltaic demonstration test began. | |
| 2013 | Newly designed 150 ton electric arc furnace started. | |
| 2016 | The 100th anniversary of its foundation. | |
| 2020 | Chita Second Plant began operation. Nakatsugawa Advanced Magnetic Materials Development Center was opened. | |
 
            