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February 1974 |
Foundation |
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| April 1981 |
Establishment of corporation |
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| September 1991 |
Kagoshima Factory completed |
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| September 1996 |
Kagoshima 2nd factory building completed |
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| September 1998 |
Kagoshima 3rd factory building completed |
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| September 2004 |
Kagoshima 4th factory building completed |
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| February 2005 |
Osaka Head Office factory transferred to the current location |
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| April 2006 |
Kagoshima 5th factory building completed |
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