Provisional anti-dumping duty: 

When determination of the normal value and margin of dumping in relation to any article in accordance with this section and rules made there under is pending, the Central Government may impose anti-dumping duty on the basis of provisional estimate of such value and margin. If the provisional duty is higher than the margin finally determined, then the Central Government shall reduce the anti -dumping duty and shall also refund the excess duty collected [Sub-section (2)].