| 1930 | Started selling precious metal bullions and refining at Tokyo. |
|---|---|
| 1934 | Authorized as Good Delivery Bars at the London Silver Market. |
| 1935 | Opened a domestic Plant at Tokyo (Closed in 1980). |
| 1938 | Opened branches in China to start refining precious metals. |
| 1941 | Opened a plant at Shanghai to work on minting Chinese national coins. |
| 1948 | Designated by GHQ as a precious metal processing plant for gold and platinum. |
| 1952 | Opened a domestic branch at Osaka. |
| 1955 | Opened a domestic branch at Kitakyushu. |
| 1957 | Started importing platinum from former USSR for the first time in Japan. |
| 1958 | Opened a domestic branch at Nagoya. |
| 1967 | Developed dental casting precious alloys for metal ceramics "KIK" for the first time in Japan. |
| 1968 | Opened a domestic Plant at Saitama. |
| 1975 | Developed "IFK chaton" for jewelry parts. |
| 1979 | Established ISHIFUKU Jewelry Parts Co., Ltd. at Tokyo. |
| 1980 | Opened another domestic plant at Saitama. |
| 1982 | Authorized as seventh melters and assayers in Japan at the London Gold Market. |
| 1983 | Authorized as the third Good Delivery Bars in Japan at the London Platinum Market. |
| 1984 | Authorized as the second Good Delivery Bars in Japan at the London Palladium Market. |
| 1989 | Joined International Platinum Association. |
| 1994 | Developed the dental implant products. |
| 1996 | Started mass-production of gold and silver targets. |
| 1997 | Developed the technology for mass-production of iridium based plugs. |
| 2000 | Acquired the certification of ISO9002. Total purchase of platinum reached 3 million toz (about 93t) from Impala Platinum Holdings Ltd.(South Africa) . |
| 2002 | Acquired the certification of ISO9001:2000. |
| 2003 | Acquired the certification of ISO14001:2004. |
| 2005 | Acquired the certification of ISO13485:2003. |
| 2009 | Completed the first phase of Soka Plant's reconstruction. |
| 2011 | Completed the second phase of Soka Plant's reconstruction. |
| 2013 | Completed the whole phase of Soka Plant's reconstruction. |
