Corrugated boxes, in the process of transportation is mainly a bearing container, no obvious thermal insulation effect on the product. The interior of the insulated carton is mainly composed of  EPE foam foil or bubble foil, through which to achieve the insulation effect. Usually EPE foam heat preservation effect is good; Bubble foil carton cooling performance is excellent, mostly used for refrigeration transportation. The insulation time can be up to 8-24 hours, the specific need to refer to the transportation environment, the number of ice bags, use volume and other aspects of the confirmation.