| 1946-11 |
Founder, Mr.Iwao Sakamaki, established SAKAMAKI IRON WORKS to produce wood working machinery. |
| 1949-05 |
Start of manufacturing of Hemp-textile Sewing Machines. |
| 1951-04 |
The factory was transferred to Drill Chuck manufacturing. |
| 1951-06 |
The organization was changed to a corporation, named SAKAMAKI MFG. CO.,LTD. |
| 1957-10 |
Nation-wide “YUKIWA” Group (Sales Network) was organized. |
| 1957-12 |
Approval of JIS indication on chucks for portable electric power drills. |
| 1962-03 |
Start of manufacturing of Collet Chucks. |
| 1963-10 |
Approval of JIS indication on Drill Chucks for machine tools. |
| 1965-02 |
Opening of Tokyo office. |
| 1965-05 |
Tap Chucks developed. |
| 1966-09 |
Manual Index Tables developed. |
| 1967-11 |
Automatic Index Tables developed. |
| 1968-07 |
KAWAGUCHI FACTORY built. |
| 1970-07 |
Start of manufacturing of Keyless Drill Chucks. |
| 1971-09 |
Quick Chucks developed. |
| 1972-09 |
Opening of Osaka office. |
| 1975-08 |
Tap Holders developed. |
| 1976-06 |
NC Rotary Tables developed. |
| 1978-11 |
Start of manufacturing of Drill Chucks for Hobby-use. |
| 1980-08 |
KOHWA SEIKI CO., LTD. established. |
| 1982-01 |
Drill Mill Chucks developed. |
| 1983-05 |
Start of manufacturing of Duplex-holding Tools. |
| 1983-08 |
KAINOSWA Factory built. |
| 1984-03 |
Our Drill Chuck was equipped with Space Shuttle “Challenger” and has been used for space works. |
| 1984-10 |
KAINOSWA Factory built more. |
| 1984-10 |
Development of NC Coupling Index Rotary Tables. |
| 1986-12 |
Pencil Mill Chucks developed. |
| 1987-09 |
CNC Rotary Table SNC Series developed. |
| 1988-04 |
Mr. Iwao Sakamaki assumes the chairman, and Mr. Kazuo Sakamaki assumes the president. |
| 1988-12 |
Keyless Drill Chucks for cordless electric drills developed. |
| 1989-11 |
Corporate name changed to YUKIWA SEIKO INC. |
| 1990-03 |
Awarded with Economics Promotion Prize of Niigata Pref. |
| 1990-08 |
Private Placement Bond issued. |
| 1991-08 |
Opening of new Head Office & Factory. |
| 1991-09 |
Establishment of YUKIWA SEIKO U.S.A., INC. in North Carolina. |
| 1992-03 |
YUKIWA INTERNATIONAL INC. established. |
| 1993-05 |
Opening of Nagoya office. |
| 1994-03 |
Super G1 Chucks developed. |
| 1995-11 |
CNC Rotary Table “YNC Series” developed. |
| 1996-09 |
KAINOSWA Factory built more. |
| 1997-08 |
Approval of ISO9001. |
| 1999-02 |
New Drill Mill Chucks developed. |
| 1999-07 |
All-metal Sleeve Keyless Chucks for Portable Drills developed. |
| 1999-10 |
Shrink-fit-holders developed. |
| 2000-01 |
Controller “BC1” for CNC Rotary Table developed. |
| 2000-02 |
Awarded JSAI “Matsubara Invention Prize” for Keyless Drill Chucks with Lock Device. |
| 2000-11 |
Awarded “Technology Prize” of Niigata Prefectural Governor. |
| 2000-11 |
CNC Tilting Rotary Table “TNT Series” developed. |
| 2001-04 |
Awarded with Minister of Science and Technology at development of industrial chucks. |
| 2002-05 |
KAINOSWA Factory built more. |
| 2003-01 |
CNC Rotary Table “JNC Series” developed. |
| 2003-03 |
Tokyo office - moving to the new location. |
| 2003-12 |
Approval of ISO14001. |
| 2004-11 |
Direct Drive CNC Rotary Table developed. |
| 2005-01 |
Hybrid G1 Chucks developed. |
| 2006-08 |
Approval of ISO9001:2000. |
| 2008-04 |
Approval of new JIS mark indication on Drill Chucks. |
| 2008-05 |
Kazuo Sakamaki, president, awarded “Medal with Yellow Ribbon” at development of industrial chucks. |
| 2008-11 |
Opening of YUKIWA SEIKO INC. SHANGHAI REP. OFFICE. |
| 2009-12 |
Elected as one of 1400 Job-Creating Companies by Ministry of Economy, Trade and Industry. |
| 2011-08 |
Green G1 Chucks developed. |
| 2012-10 |
Green G1 Chucks win the "Good Design Award" by Japanese design promotion meeting sponsorship. Also elected as "Good Design best 100." |
| 2012-11 |
Green G1 Chucks win the "Frontier Good Design Award." (The Award of President of Small and Medium Enterprise Agency) |
| 2013-11 |
All stainless keyed drill chucks developed. |
| 2014-07 |
Collet Chucks "A series and B series" developed. |
| 2014-11 |
2nd factory at Head Office built. |
| 2015-05 |
Satsumashiranami circle awarded the Niigata prefectural governor award at the Niigata district QC circle meeting. |
