This order (effective 23 Jan 2008) applies Schedule 4 item 50 of the Customs Tariff Act 1995 to heaters or coolers for alumina slurry and/or liquor classified at tariff heading 8419.50.90, making them subject to the concessional treatment identified in that Schedule (declared under s.269P; revocable under ss.269SC–269SD). It affects importers and manufacturers by changing customs duty treatment for these specific goods; importers must use the correct tariff classification to claim the concession and face administrative compliance and revocation risk.