This Order (made under s.269P of the Customs Act 1901) declares that polyethylene terephthalate (tariff classification 3907.60.00) meeting two technical limits — intrinsic viscosity ≥ 0.925 and acetaldehyde < 1 ppm — is subject to Part III Schedule 4 item 50 of the Customs Tariff Act 1995, effective 22.08.05 until revoked under ss.269SC or 269SD. It affects importers of that PET by tying tariff treatment to verifiable material characteristics, requiring testing/compliance and enabling administrative revocation.