
Koretsune Seiko Ltd. designs and manufactures hydraulic devices and gearboxes for construction equipment and other heavy machinery.

Koretsune Seiko is highly regarded, both in Japan and around the world, for extensive application of state-of-the-art, computer-controlled devices as well as for advanced technological expertise and rigorous quality control methods.
Construction equipment plays an important role in both emergency response activities and the reconstruction of area affected by natural disasters.
| Name | Koretsune Seiko Limited |
|---|---|
| Address | Headquarters located at 211 Nishiyokota-cho, Kasai, Hyogo |
| Kasai Minami factory located at 2001-44 Abiki-cho, Kasai, Hyogo (Kasai Minami Industrial Park) | |
| Established | April, 1969 |
| Paid-in capital | 50 million yen |
| No. of employees | 230 employees |
| Site area | 22,638 m2 |
| Floor area | 11,983 m2 |
| Affiliated companies | Koretsune Hydraulic Machinery (Hanzhou) Co., Ltd. |
| Business description | Hydraulic equipment and gearboxes |
| Major clientele | Caterpillar Japan, Limited |
| Mitsubishi Heavy Industries, Limited | |
| Mitsubishi Agricultural Machinery Company, Limited | |
| Kawasaki Heavy Industries, Limited | |
| KCM Corporation | |
| Kobelco Construction Machinery Company, Limited | |
| Kobelco Cranes Company, Limited | |
| Kubota Corporation | |
| Hunan Sunward Intelligent Machinery | |
| IHI Construction Machinery Limited | |
| Caterpillar, Incorporated | |
| Banking services | Sumitomo Mitsui Banking Corporation |
| Name | KS Work, Incorporated |
|---|---|
| address | 335 Nishiyokota-cho, Kasai, Hyogo 675-2335 |
A Koretsune Seiko Group company, established on September 10, 2007. Handles contract work as well as startup of new equipment as a specialist in manufacturing technology and expertise.