Section 6(1)(a) in The Customs Tariff (Determination of Origin of Products under the Duty Free Tariff Preference Scheme for Least Developed Countries) Rules, 2015
(a)operations to ensure the preservation of products in good condition during transport and storage such as drying, freezing, keeping in brine, ventilation, spreading out, chilling, placing in salt, sulphur dioxide or other aqueous solutions, removal of damaged parts, and like operations;