This Order (made under s.269P of the Customs Act 1901) declares that a specific type of skid-mounted cementer — described by features like silos, at least two triplex pumps, ≥2,500 kg/min mixing capacity, densitometers and diesel engines — is subject to the tariff treatment set out by item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 28 Sept 2007 until revoked. It matters to importers and customs administrators because it changes the tariff classification and therefore the duty treatment and compliance requirements for those machines.