Customs exemption: adding Brunei Darussalam to countries eligible for relief from excess customs duty on imports. Inserts Brunei Darussalam as serial number 7 in Appendix I to Notification No.153/2009-Customs, thereby extending the principal notification's exemption to goods imported from Brunei Darussalam so as to exempt from customs duty that portion in excess of the prescribed rate; the amendment is made under section 25(1) of the Customs Act, 1962 by Notification No.115/2010-Customs.