Under s.269P of the Customs Act 1901 this Order (effective 28.06.2005) declares certain linear‑accelerator parts (classified 8543.90.90) to be covered by item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, remaining in force until revoked (ss.269SC/269SD). Importers of those listed parts can claim the Schedule 4 tariff concession (reducing or removing customs duty); the delegate named in the Order (Michael Perry) makes the declaration and importers must satisfy customs classification and claim procedures to obtain the concession.