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| Feb. | 1917 | Founded an ironwork at Hirabuki-Machi, Toyama |
| Mar. | 1923 | Tsune Iron Works founded in Toyama. |
| Apr. | 1925 | A branch factory in Toyama and Kanazawa Prisons. |
| Jun. | 1942 | Plant designated by the government for manufacture of military supplies for the Maizuru Naval Shipyard. |
| Apr. | 1943 | Factory was moved to Tera-Machi, Toyama and registered as TSUNE Iron Works Co., Ltd. |
| Feb. | 1945 | Plant designated by the government for manufacture of military supplies for the Tokyo Warship Headquarters. |
| Nov. | 1959 | Recognized by the chief of the Small and Medium Enterprise Agency as a management rationalization model plant. |
| Nov. | 1962 | Shinjo factory was established at Toyama machine industry center, Shinjo-Machi in Toyama. |
| Apr. | 1963 | Start manufacturing and selling hack sawing machine, brand name "Economy" |
| Nov. | Company name has changed to "TSUNE Seiki Co., Ltd". |
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| Nov. | 1964 | Nyuzen factory was established at Nyuzen machine industry center, Nyuzen-Machi, Shimoniikawa-Gun. |
| Jul. | 1970 | Start manufacturing and selling saw blade grinding machine. |
| Oct. | Circular sawing machine has developed. | |
| Jul. | 1973 | Company building has built at Fuchu-Machi, Nei-Gun, Toyama. |
| Oct. | 1979 | Expansion large assembly shop at main factory. |
| Jun. | 1981 | Start manufacturing and selling band sawing machine. |
| Apr. | 1982 | Expansion second office building at main factory. |
| Sep. | Automatic band sawing machine TC series has developed. | |
| Apr. | 1985 | Expansion show room and engineering center. |
| Jun. | 1986 | Automatic circular sawing machine, CK3 series has developed. |
| Oct. | Automatic storage with sawing system has developed. | |
| Jul. | 1988 | Automatic circular saw blade grinding machine with NC has developed. |
| Oct. | Automatic pipe cutting and chamfering machine has developed. | |
| Jun. | 1989 | Expansion large assembly shop at main factory. |
| Apr. | 1990 | Brand name has changed from "ECONOMY" to "TSUNE". |
| Oct. | High speed band sawing machine, CB4-260GNC received "Good design merchandize (G-Mark)" from the Ministry of International Trade and Industry. |
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| Jul. | 1991 | Expansion parts manufacturing factory. |
| Aug. | 1993 | Automatic tube cutting machine with roll cutter has developed. |
| Feb. | 1995 | Automatic grinding machine for large size saw blade has developed. |
| Jun. | 1998 | Large plate cutting machine has developed. |
| Sep. | Automatic high precision circular sawing machine, RKA63 has developed. | |
| Nov. | Automatic circular sawing machine TK5C-220 has developed. | |
| Mar. | 1999 | Automatic chamfering machine TMB-50 has developed. |
| Jul. | 2000 | Expansion / reconstruction Nyuzen factory. |
| Oct. | Take out ISO9001. | |
| Oct. | CNC automatic saw blade grinding machine, ECE45 has developed. | |
| Nov. | 2002 | Corian division factory has established at Yatsuo central industrial estate, Yatsuo-Machi, Toyama-Shi Nei-Gun, Toyama. |
| Mar. | 2004 | Automatic pipe cutting and chamfering machine, CKM9-70GL has developed. |
| Mar. | Sales of MRE artificial carbon-dioxide enriched water supply systems started. | |
| May. | Expansion second assembly shop at main factory. | |
| Sep. | Commended by the director of the Medium and Small Business Research Institute. | |
| Nov. | TG4-433G developed. | |
| Mar. | 2005 | TSUNE AMERICA LLC, an overseas sales affiliate, founded. |
| Mar. | Cerebrated 88th year in business. | |
| Nov. | The 6th Private Show held. | |
| Feb. | 2006 | TSUNE SEIKI (Thailand) Co., Ltd., an overseas affiliate, founded. |
| Mar. | Automatic high-speed band sawing machine TCB-400G developed. | |
| May. | Fully automatic carbide tipped circular sawing machine TK5C-102GL developed. |
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| Nov. | The second plant of Corian Division started to operate. | |
| Nov. | Automatic precision high-speed circular sawing machine TKA63 developed. | |
| Nov. | Submitted to the 23rd Japan International Machine Tool Fair. | |
| Jan. | 2007 | Cerebrated 90th year in business. |
| Nov. | The 7th Private Show held. | |
| Nov. | The Historical Record Center opened. |
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| Nov. | Nyuzen 2nd plant built. |
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| Mar. | 2010 | FUTABA SEIKI Co LTD. merged with TSUNE SEIKI Co. LTD. |