This Tariff Concession Order (TCO 1106938) treats specified "gas recovering machines" (table item: 8479.89.90) that include both a gas chiller and a carbon dioxide gas compressor as goods to which item 50 of Part III of Schedule 4 to the Customs Tariff Act 1995 applies, effective 22 February 2011 until revoked. Mechanically, it changes the tariff treatment at that tariff line for importers of those machines; the order was made by a delegate of the CEO and can be revoked under sections 269SC or 269SD.