Υλικό και λειαντικά

Κορυφαίοι κατασκευαστές

• Pratt & Whitney Canada Cie Divpratt
• Raytheon Company
• Air Products and Chemicals, Inc.
• Maryland, Triumph Thermal Systems
• Lucent Technologies Inc
• Oerlikon Metco (us) Inc.
• Naval Electronic Systems Security
• andrea Electronics Corporation
• Lockheed Martin Corporation
• Egs Electrical Group