This is something we do if the shipment has to be kept clean from debris and dirt and the standard tarpaulin just isn’t enough. The cargo is covered with special plastic film, taped along the edges and round shekel/anchorage places and then heated. Heat shrinks the film tightly around the item and this keeps the water and dirt out during transportation and storage. It can be used for objects of all sort of shapes and sizes and this method can be also used for hiding the shipments sensitive parts from competitors curious eyes.