OneShip offers you a flexible label when ship with specified couriers. You can customize what and how the details display, including: Whether to display product information(on separate rows), display original order number and partly hide the private information.
This article covers the below：
Locate label customization settings
Navigate to【Settings】->【Other Settings】->【Shipping Label Settings】in your OneShip portal. Select your preference options to activate your new shipping labels format.
After you update the settings, it will only applied to the shipping labels of the listed couriers: