The Principal notification was published in the Gazette of India, Extraordinary, vide Notification No.36/2001 – Customs (N.T.), dated, the 3rd August, 2001 (S.O.748 (E), dated, the 3rd August, 2001) and was last amended vide Notification No. 20/2007-Customs (N.T.), dated, the 5th March,2007 (S.O.319(E) dated 5th March,2007).