A slimline lockbox is a device that can be added to a shipping container to provide an additional layer of security. To use a slimline lockbox on a shipping container:   Choose a location on the container door where the lockbox will be installed. Weld the lockbox to the container door Use the provided key or combination to open the lockbox. Insert a padlock or other security device into the lockbox and lock it in place. Close the lockbox and lock it with the provided key or combination. The container is now secured with an additional level of security provided by the lockbox. It's important to ensure that the lockbox is securely welded to the container door and that the lock inside the lockbox is in good working condition. It's also a good idea to use a high-quality padlock or other security device inside the lockbox to ensure maximum security. It's also important to note that Slimline lockbox is not a standalone security measure and should be used in combination with other security measures, such as Twist locks or cameras, to ensure the maximum level of security.