Customs amendment on warehousing, drawback, seizure disposal, and Board instructions reshapes customs administration and export treatment. The amendment revises the Customs Act, 1962 by extending warehousing periods in specified cases, altering recovery and disposal provisions, expanding drawback for certain export forms, and introducing procedures for seizure and disposal of perishable or hazardous goods. It also treats certified inventories, photographs and sample lists as documents, authorises Board instructions for uniform classification and duty levy, transfers pending proceedings to the Collector of Customs, and validates earlier drawback allowed on postal exports.