This Tariff Concession Order declares that polybutylene terephthalate cyclic oligomers (tariff code 3907.99.10) are goods to which Item 50 of Part III of Schedule 4 to the Customs Tariff Act 1995 applies. The declaration was made by a delegate of the Chief Executive Officer under section 269P of the Customs Act 1901 and took effect on 24 July 2006, continuing until revoked under sections 269SC or 269SD. It therefore changes how that specific imported chemical is treated for tariff purposes and affects importers who bring it into Australia.