| Oct | 1949 | Est(Established). as an electroplating manufacturer |
| Mar | 1954 | Set business as a limited company |
| Oct | 1968 | Started anodizing process along with new facilities |
| Oct | 1980 | Started anodizing process for production devices of semiconductors |
| May | 1987 | Est. a new Soka factory for die-casting material (ADC1-14) |
| Aug | 1996 | Est. new facilities of oxalic acid anodizing process |
| Mar | 1997 | Changed our business structure to Company Limited |
| Aug | 2005 | Est. large process tanks for LCD CVD 10th generation |
| Aug | 2006 | Est. new facilities for masking and clean room environment |
| Nov | 2016 | Integrated all anodizing line into Soka factory |
| Dec | 2016 | Moved headquarters to Nishi-Nippori, Arakawa, Tokyo |
| Jun | 2024 | Moved headquarters to the current place |
