Υλικό και λειαντικά

Κορυφαίοι κατασκευαστές

• Tiffin Parts, L.l.c.
• Valad Electric Heating Corp.
• Aero Engineering & Manufacturing
• Boeing Company, The
• U S Army Aviation and Missile
• Lynn Electronics Corp.
• U S Army Tank Automotive Command
• Gkn Aerospace Bandy Machining, Inc.
• Franklin Machine Products Inc
• Northrop Grumman Systems Corporation