Anti-dumping duty extension preserves the levy on acetone imports from Korea RP for an additional year unless revoked. Amendment to the principal customs notification extends the anti-dumping duty on acetone imports from Korea RP by inserting a paragraph that preserves the duty for an additional one-year period, specifying that the duty shall remain in force up to and inclusive of the terminal date unless revoked earlier; the extension is effected under the Customs Tariff Act and the anti-dumping rules following a continuation review.