History
- 1953
 
- Established as the manufacturer of direct reading liquid level gages in Japan
 
- 1962
 
- The first magnetic float level gage was and released for Japan market..
 
- 1964
 
- The first reflex level gage was released for Japan market.
 
- 1965
 
- Got a patent on bi-color level gage for high pressure applications
 
- 1966
 
- Got a patent on KLINPORT-Sight glass in Japan and in USA
 
- 1968
 
- Soka factory was established.
 
- 1971
 
- KLEARCOAT, Teflon® coat glass was developed and released.
 
- 1980
 
- Certified as the approved manufacturer by High-Pressure Gas Application Regulation
 
- 1981
 
- Got a patent on position detector for Magnetic Float.
 
- 1984
 
- Float Level Switch was released.
 
- 1995
 
- Certification of ISO9001was obtained.
 
- 1996
 
- LUKING-AR, alkalin resistant glass was released.