Company history
1965  Oct.
Established as SANSHINDENSHI CO., LTD. with the capital of 700,000yen
1967 Feb.
Establishied NISHIJYO FACTORY at Nagano Pref.
1968 Mar.
Increased the capital to 2,000,000yen
1971 Feb.
Established MIHARU FACTORY at Fukushima Pref.
1972 Feb.
Increased the capital to 20,000,000yen.
1978 Dec.
Established TAIWAN UNICON with the capital of 60,000,000yen.
1979 Dec.
Increased the capital to 40,000,000yen.
1980 Sep.
Separated sales operation and established UINCON CORPORATION
1982 Nov.
Belonging to Nichigas group
1983 Aug.
Changed the corporation name to UNICON CO., LTD
1986 Aug.
Combined Nishijyo factory to Miharu factory.
1989 Jun. 
Closing Taiwan Unicon.
1998 Apr.

Unicon Co., Ltd. and Unicon Coporation were combined with Nichigaskaihatu. and established NICHIGAS ELECTRONICS DIVISION.

2004 Jun.
Closing Nichigas Electronics Division and established UNIELECS CO., LTD.