What this does: This is a Tariff Concession Order (TCO)—a legal permission slip that allows specific imported goods to enter Australia duty-free (or at a reduced customs duty rate) under the Customs Tariff Act 1995.
What it covers: Very specific industrial cooling equipment: air quenches used in continuous paint lines (specifically "prime oven" types) with an air supply capacity of at least 110,000 cubic metres per hour. These are massive cooling systems used in industrial metal coating plants (like steel sheet painting lines).
Who it affects: Importers of this exact equipment (classified under tariff code 8419.89.90) can claim Item 50 in Schedule 4 of the Customs Tariff, saving them the standard import duty they would otherwise pay.
Key details: The order took effect on 5 May 2006 and remains valid until revoked. It was issued by a delegate of the Australian Customs CEO under powers in the Customs Act 1901.