Anti-dumping duty extension on caustic soda maintains import measures for specified origins, continuing levy for a further year. Extension of the anti-dumping levy on imports of Caustic Soda from Saudi Arabia and the United States is implemented by inserting a paragraph in the principal notification to preserve the duty and related measures up to and inclusive of 25th November 2018, following a continuation review and recommendation by the designated authority and exercise of powers under the Customs Tariff Act and the applicable anti-dumping rules.