| October 1957 | Sanyo Seisakusho was established in Kariya-shi, Aichi with an initial 1,000,000 Yen in capital. |
| September 1968 | Sanyo Real Estate was established in Igaya-cho in Kariya-shi with an initial 1,000,000 Yen in capital. |
| September 1968 | Sanyo Seisakusho moved to Igaya-cho in Kariya-shi. |
| November 1968 | The legal status of Sanyo Seisakusho was changed from a private limited company to a limited company, and the capital invested increased to 10,000,000 Yen. |
| April 1978 | The die division was spun off as a separate company called Sanpo Kogyo Co. Ltd. with a capital investment of 5,000,000 Yen. |
| August 1981 | Sanpo Kogyo built and relocated to a new factory facility at Maruoka. |
| August 1986 | The Kariya-shi, Maruoka plant was built with the aim of reducing labor requirements. Automatic transmission production and assembly was transferred there. |
| August 1987 | Efficiency gains were made by concentrating machinery in the Second Head Office Factory and changing the layout. |
| January 1988 | An automatic transmission assembly line was added to the Maruoka plant, bringing the total number of lines to two. |
| April 1988 | A spot welding division was added to the Maruoka plant. |
| April 1990 | And additional automatic transmission line was added to the Maruoka plant, bringing the total number of lines to three. |
| April 1995 | Sanpo Kogyo's invested capital was increased to 10,000,000 Yen. |
| June 1996 | The legal status of Sanyo Real Estate was changed from a private limited company to a limited company, and the capital invested increased to 10,000,000 Yen. |
| July 1997 | Sanpo Kogyo company name was changed to Sanyo Die Create Co. Ltd. |
| August 1997 | Both the Head Office and factory moved to a brand new facility at our current site. |
| June 1999 | Sanyo Seisakusho was awarded the ISO9001 standard. |
| September 2001 | Sanyo Seisakusho was awarded the ISO14001 standard. |
| November 2002 | Sanyo Seisakusho Vietnam Co. Ltd. was established. |
| July 2003 | Sanyo Seisakusho Vietnam Co. Ltd. began operations. |
| January 2005 | An increase in business necessitated the building of a third factory building. |
| February 2005 | An additional 500 ton automatic transmission line was added to the number 2 plant. |