1975-1978[]
1978-1981[]
1981-1986[]
1986-1994[]
1994-1999[]
1999-2002[]
2002-2003[]
2003-2004[]
2004-2006[]
2006-2014[]
2014-present[]
The CEO of IST Group revealed a slightly modified logo in December 1, 2013. It will be launched on March 29, 2014.