This Order (made under s269P) declares that certain gas-burner parts — burner blocks, burner tiles and gas mixers — classified at 8417.90.00 are goods to which Part III, Item 50 of Schedule 4 of the Customs Tariff Act 1995 applies. It takes effect from 21.08.07 and continues until revoked under ss269SC or 269SD. Importers of the listed parts are the primary parties affected because the Order changes their tariff treatment; the CEO’s delegate made the declaration and correct tariff classification is required for compliance.