FACTORY
Production division
![](https://www.koken-boring.co.jp/en/wp-content/uploads/sites/2/2022/06/02_事務所棟外観北東面_2598s-1024x683.jpg)
![](https://www.koken-boring.co.jp/en/wp-content/uploads/sites/2/2022/06/01_航空写真_0015s.jpg)
Address : 54-1, Suzukawa, Isehara, Kanagawa, 259-1146, Japan
Factory | TEL : +81-463-20-9870 FAX : +81-463-20-9751 |
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Design division | TEL : +81-463-20-9563 FAX : +81-463-20-9758 |
MC Technical center | TEL : +81-463-20-9565 FAX : +81-463-20-9759 |
Suwa factory
![](https://www.koken-boring.co.jp/en/wp-content/uploads/sites/2/2020/06/img-factory-03.jpg)
![](https://www.koken-boring.co.jp/wp-content/themes/koken-boring-html/dist/assets/images/img-factory-04.jpg)
Address : 10801-3, Haramura, suwagun, Nagano, 391-0100, Japan
TEL : +81-266-79-6011
FAX : +81-266-79-6413
TEL : +81-266-79-6011
FAX : +81-266-79-6413