This Tariff Concession Order (TCO 0927615) declares that imported goods described as a “Transformer oil regeneration system” (tariff heading 8421.29.00) are covered by item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 30 July 2009 and continuing until revoked under sections 269SC or 269SD. It changes how those imports are treated for tariff purposes, affecting importers (who claim the concession), customs officials (who administer it) and competing suppliers; compliance depends on correct classification and entry declaration.