4. As the goods will probably be subjected to a thorough customs examination the cases should be of a type which can be easily made fast again after opening 5. The cases used for packing our transistor radios are light but strong They save shipping space and facilitate the storage and distribution of the goods4.As the goods will probably be subjected to a thorough customs examination, the cases should be of a type which can be easily made fast again after opening. 5. The cases used for packing our transistor radios are light but strong, They save shipping space and facilitate the storage and distribution of the goods