Les acheteurs suivants des composants de IC sont des membres ou des membres associés de STACK: Siemens Nixdorf (Allemagne), Italtel (Italie), GEC Plessey Communications (Royaume Uni/Allemagne), Northern Telecom, Celestica (Canada/Royaume Uni), Smiths Industries, British Aerospace (Royaume Uni), AG Communications Systems, , Motorola, Lucent Technologies, The Boeing Company, Honeywell, Allied Signal Aerospace and Rockwell Collins (Etats Unis).
The following purchasers of IC components are members or associate members of STACK: Siemens Nixdorf (Germany), Italtel (Italy), GEC Plessey Communications (UK/Germany), Northern Telecom, Celestica (Canada/UK), Smiths Industries, British Aerospace (UK), AG Communications Systems, Motorola, Lucent Technologies, The Boeing Company, Honeywell, Allied Signal Aerospace and Rockwell Collins (USA).