History: 1980s
| 1980s | 1989 | Participated in ATME '89 and the 4th OTEMAS. |
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| 1987 | Introduced new yarn clearer KC-60 with individual automatic-gain-controller. Exhibited KET-80/B and KET-80/C at ITEX '87, China. Exhibited KET-80/B, KET-80/C, CFT-II and KC-60 in ITMA '87, France. |
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| 1985 | Introduced new instruments of CFT-II and KC-40T at the 3rd OTEMAS, Osaka. Exhibited CFT-II and KC-40T at ATME '85, USA. |
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| 1984 | The president Mr. Kawaguchi passed away. Mr. Fujikawa was installed as the successor to Mr. Kawaguchi. |
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| 1983 | Introduced digital yarn clearer KC-50 with CMOS technology applied. Peacefully terminated the technical tie-up with Zellweger Uster. Exhibited KET-80/B and KC-50 in ITMA '83, Italy. |
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| 1981 | Introduced yarn clearer KC-40 and KC-10 with Integration Circuit technology applied. Introduced Evenness testers KET-80/B for spun yarn and KET-80/C for continuous filament with computer technology firstly applied in the world. |
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| 1980 | Closed the Nagoya branch. |