This Order makes imported ceramic proppants (Customs Tariff heading 6909.19.00) eligible for item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, so they attract the Schedule 4 concession rather than the standard tariff. It takes effect from 8 December 2008 and runs until revoked under sections 269SC or 269SD. Importers gain the altered tariff treatment, the delegate of the CEO (under s269P) determined eligibility, and Customs must administer the concession, producing compliance and administrative effects for importers and the agency.