| @ | Mar,1991 | Founded Amtrans Ltd. in Kawasaki-City, Japan |
| @ | Jan, 1995 | Started retail shop at Akihabara Radio-Center. |
| @ | Feb, 2002 | Head Office moved to Kanda-Awaji-cho, Chiyoda-ku, Tokyo Opened Audio Shop at Kanda-Awaji-cho |
| @ | May, 2004 | Changed the Company name to Amtrans Corporation. |
| @ | Mar, 2005 Dec |
Copper foil capacitor development for audio. It becomes the management reformation plan approval corporate based on the small and medium-sized enterprise new active conduct of business method. |
| @ | Apr, 2006 | The Ina office is established in Nagano Prefecture Ina City. Carbon film resistor for audio and manufacturing of oxidation metal film resistor |
| @ | May, 2007 | Oxidation metal film resistance (CAMRA) development for audio |
| @ | Mar, 2008 Apr |
The Akihabara branch is enhanced. Highest class carbon resistance (AMRG) development for audio |