Mechanically, this order applies Part III Item 50 of Schedule 4 of the Customs Tariff Act 1995 to spray-cooling tanks (tariff heading 8424.89.90) with a seal flange diameter not greater than 2,000 mm, making those imports eligible for the tariff concession from 2 Feb 2007 until revoked under ss 269SC/269SD. Importers of the specified tanks benefit through reduced customs duty; the instrument was signed by a CEO delegate (Wendy Knowles). The measure lowers import costs for that specific equipment and requires correct tariff classification and administrative compliance.