This Order applies a tariff concession (Schedule 4 Item 50) to a specific imported product: machine-guidance micropositioners (Customs classification 8428.90.00) with spatial resolution not greater than 0.1 microns, effective 22 February 2010 and continuing until revoked. Practically, importers of those micropositioners will pay lower or no import duty while the concession applies; the concession can be revoked under sections 269SC or 269SD, so importers must ensure the goods meet the stated classification and technical specification.