Bond based exports without Central Excise Duty: execute prescribed bond, file AR4, and submit proof of export to discharge the bond. Exports without payment of Central Excise Duty are permitted under a bond regime requiring execution of prescribed bonds (B, B 1, B 16), filing Form AR 4 in six copies, and submission of specified proof of export documents to the authority before whom the bond was executed. Consolidated B 1 general bonds require maintenance of a running bond account and allow block transfers between authorities; proof admission, short shipment demands, diversion for home consumption, re entry and recovery procedures are specified, with supervisory sealing, sampling and AR 4 disposal rules.