This Order treats polybutadiene rubber (tariff classification 4002.20.00) that meets two technical limits — Mooney viscosity (ML1+4 @100°C) ≥ 20 and cis content ≥ 30% — as covered by item 50, Part III, Schedule 4 of the Customs Tariff Act 1995. It commenced 27 June 2006 and continues until revoked or until any end date specified in the table.
Importers of that rubber must ensure shipments meet the stated specifications to qualify for the concession; the legal authority cited is s269P of the Customs Act 1901 and revocation routes are ss269SC/269SD.