This order declares that grinding mills classified under tariff heading 8474.20.00 are to be treated as goods covered by item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 11 April 2006 (made under s.269P of the Customs Act 1901). Mechanically that changes the tariff treatment on import — importers' duty liability is affected; the order was signed by a delegate (Michael Perry) and may be revoked under ss.269SC or 269SD, so administrative discretion and correct classification determine who benefits and the compliance required.