Mechanically, this Order treats electrically conductive mats (tariff classification 3918.10.00) with a polyvinyl chloride surface and a nitrile sponge rubber base as goods to which item 50 in Part III of Schedule 4 of the Customs Tariff Act 1995 applies, effective 29 July 2009 until revoked under sections 269SC or 269SD. It affects importers and customs officers by fixing tariff treatment and compliance requirements; it therefore changes import costs, paperwork and incentives around sourcing and classification.