GTC is approved. But they got nothing to sell but some off the shelf stuff that's already on the GSA schedule with other vendors. And don't get me started about those pathetic appliques they continue to pump.
“Subcontractor” (1) means any person, other than the prime contractor, who offers to furnish or furnishes any supplies, materials, equipment, or services of any kind under a prime contract or a subcontract entered into in connection with such prime contract; and (2) includes any person who offers to furnish or furnishes general supplies to the prime contractor or a higher tier subcontractor. http://acquisition.gov/far/current/html/Subpart%203_5.html