| |
| 1914 |
Hojun Yoko Co., Ltd. Founding (In Osaka and Lushun) |
| 1939 |
Bentonite Mining begins. Establishment of Hojun Yoko Mining Site co., Ltd. |
| 1949 |
Production Division is Renamed "Hojun Mining Co., Ltd." |
| 1961 |
Establishment of Annnaka Factory |
| 1963 |
Establishment of "NIHON YUKI NENDO Co., Ltd." at Ise-shi Mie and start products Organophilic and Purification Bentonite |
| 1969 |
Establishment of Tomioka Mining Site. Commencement of first Japanese mechanization of open-pit drilling |
| 1971 |
Establishment of Myogi mining Site and Start mining within a Pit |
| 1986 |
Commencement of exclusive sales of "PARASEAL" waterproof sheet and "GUNDSEAL" water shielding sheet |
| 1987 |
Start products Cat Litter |
| 1989 |
Establishment of Laboratory of Applied Clay Technology (LACT) |
| 1990 |
Tokyo Factory is built in Ichihara City, Chiba Prefecture, Commencement of mining of ore imported from Wyoming, USA |
| 1993 |
Advance business of Environment ground |
| 1995 |
Hojun Mining Co, Ltd & Laboratory of Applied Clay Technology awarded the Technology Award from the Clay Science Society of Japan |
| 2000 |
Build the information system "intranet" and start operation |
| 2001 |
Achieves ISO9001 Certification for all group company |
| 2001 |
Hojun Yoko Co., ltd merges with Hojun Mining Co., Ltd and renamed "Hojun Co., Ltd." |
| 2002 |
Start products of White Bentonite |
| 2003 |
Commencement of Source Ore Importation from the People's Republic of China |
| 2004 |
Foundation of Nagoya Factory in Tokai City, Aichi |
| 2006 |
Establishment of a manufacturing facility for the increased production of "SUPER HOTAKA", a bentonite product for molding sand |
| 2009 |
Development of a "NATURAL BLANKET METHOD" with 100% bentonite, a Natural mineral |
| 2014 |
Celebration of the 100th anniversary |
