Industrial Storage

 can store items in advance for later use. This way you may not have to not create a production route for small orders which you can fill from the storage.

By tapping on a warehouse or industrial building, you will see the available facilities that can store their goods in it. And the other way around, by tapping on a facility you will see which storage building can store its goods. They are not automated, you will need to assign trucks to transport goods to the storage building and later assign trucks to move the goods out of the warehouse.