History
| June 1976 - | SANEMU Industries is founded (500,000 yen in capital); soundproofing division is established. |
| December 1976 - | Capital increased to 2 million yen. |
| April 1983 - | Capital increased to 8 million yen. |
| June 1986 - | Capital increased to 20 million yen. |
| September 1987 - | Established a thermal insulation (construction) division. |
| April 1991 - | Capital increased to 50 million yen. |
| May 1995 - | Relocated the head office to the current location. |
| October 2002 - | Established a fireproofing division. |
| January 2016 - | Established a noncombustible thermal insulation division. |