| 1987 | Incorporation of COMPAREX Informationssysteme GmbH as a joint venture between BASF AG and Siemens AG |
| 1991 | COMPAREX becomes a wholly owned subsidiary of BASF AG |
| 1996 | Persetel Holdings of South Africa acquires 40% of COMPAREX |
| 1997 | Persetel acquires Q Data and changes its name to PQ Holdings |
| 1998 | PQ Holding acquires a 75% share in CIS. PQ Holdings is renamed COMPAREX Holdings |
| 1999 | COMPAREX Holdings increases its shareholding in COMPAREX to 75% and Persetel is renamed CHL |
| 2000 | COMPAREX repositions as a systems integrator and concludes strategic partnerships with EMC, Sun Microsystems and Compaq |
| 2002 | A management consortium buys COMPAREX from Comparex Holdings, and Comparex concludes strategic partnerships with Hewlett-Packard and IBM and renews its partnerships with EMC and Sun Microsystems |
