This Order declares that a specified "solids recovery plant, ceramic glaze" (tariff classification 8421.21.90) is to be treated as goods to which Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies. Mechanically, it makes those imported goods eligible for the tariff treatment set out in that Schedule item from 27 September 2007 until revoked. It primarily affects importers (who receive the tariff treatment), the Customs administration (which applies it), and Commonwealth tariff revenue while the concession operates.