- March 1974
- Established Cowbell Engineering Co., Ltd at 1993-1, Seto, Saku-shi, Nagano, Japan.

- May 1974
- Increased capital of 7.1 million yen.
- July 1975
- Relocated the Head Office to expand the Industrial and Audio Solution producing at 1200-11 Iwamurada, Saku-shi, Nagano Japan.
- April 1983
- Built the ne plant to improve working condition at 1054-2 Nagatoro, Saku-shi, Nagano, Japan. Manufactured Audio solutions.
- January 1986
- Convert main producing products from Audio Solutions to Video & Imaging Solutions.
- September 1988
- Moved the Head Office and plant at 1739-1 Nagatoro, Saku-shi, Nagano, Japan. Manufactures Video & Imaging Solutions.
- Aug. 1989
- Increased the capital of 1 million yen.
- May 1990
- Increased the capital of 21 million yen.
- April 1991
- Increased the capital of 34 million yen. Established the System Division for developing software.
- July 1991
- Rebuilt the head office.
1F/Procurment,
2F/Office and Cafeteria
3F/System Division
- April 1992
- Increased the capital of 43 million yen.
- Jun 1994
- Increased capital of 50 million yen. Established the Hardware Section in the System Division for covering technology.
- March 1996
- Opened the Tokyo Office in the System Division
- April 2000
- Started producing the IC packages.
- July 2000
- Built the main clean room.
1-2F/Clean room,
3F/System Division
- Aug. 2000
- Acquired the ISO-9001:1994 certification at the System Division
- April 2001
- Opened the Kita Kanto Office in the System Division
- Oct. 2002
- Opened the Yokohama Office in the System Division
- May 2003
- Increased the capital of 60 million yen.
- Aug. 2003
- Acquired the ISO-9001:2000 certification at the Head office.
- July 2004
- Built the Chikatsu plant as a clean room.

- May 2007
- Acquired the ISO-14001:2004 certification at the Head office.
- July 2007
- Increased the capital of 70 million yen.
- April 2008
- Relocated the Tokyo Office from the Yokohama Office in System Division for establishing the New business promotion section
- October 2008
- Launched the ALTAIR
- March 2010
- Launched the Dokoikuno-Kensyutuki for Yutorimo series
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