| 1946: Nanko Chamber of Commerce founded in Chiyoda-ku, Tokyo |
1976: Shiojiri plant founded in Nagano-ken, Japan |
| 1949: Plant in Itabashi-ku, Tokyo, founded, starting abrasive manufacturing business |
1988: Ichikawa plant established in Yamanashi-ken, Japan |
| 1961: Plant in Saitama-ken, Japan, established |
1990年 盐尻工厂内流通中心建立 |
| 1963年 以茨城县为主设立经销石材用研磨材的真壁出张所 |
2003: Establishment of our plant in Tianjin, a port city neighboring Beijing, China, namely Tianjin Nanko Abrasives Co., Ltd. |
| 1966: The quality of our products received government approval; and the plants received official recognition as Japanese Industrial Standard (JIS) plants |
2005: Nanko Abrasives (Beijing) Trading Co., Ltd. founded |
| 1974年 在台湾设立合资公司南兴研磨材工业股份有限公司（资本金6000万日元） |
