This order (TCO 0707051, effective 11 May 2007) applies tariff concession item 50 (Part III, Schedule 4 of the Customs Tariff Act 1995) to a polymerisation initiator whose active component is cumene hydroperoxide (tariff classification 3815.90.00), made under s269P of the Customs Act 1901. Importers of that chemical may claim the concession (reducing or removing duty); the concession remains in force until revoked under ss269SC or 269SD or a date specified in the order, creating an ongoing compliance and administrative oversight requirement.