When gathered, all resources - and goods made from said resources - within the Industrial Complex automatically end up at the Resource Warehouse. Once there, the resources can be transported by train to the warehouse at the main location. The trains can be found next to the warehouse. After that, the resources and goods can be sold at the Cargo Port, or transported and sold via airplanes at the New Airport. Let’s take a closer look at how this works:

The Trade Port at the Industrial Complex
At the Industrial Complex, you can complete orders for resources and goods manufactured from said resources to receive coins, experience, and licenses. The Trade Port needs to be connected to the Resource Warehouse by train tracks. The orders will come to the Trade Port on bulk freighters. As soon as you finish building the Trade Port, you will have 1 bulk freighter available to you. As you upgrade the Trade Port, you can increase the number of bulk freighters up to 3. Each bulk freighter can hold one order for resources or goods. You can choose to complete the order or skip it if you do not have the items needed to fill it. If you choose to skip this order, the next one will come in an hour.

The Cargo Depot on the mainland
The better your Cargo Depot is, the more goods it will be able to fit, and the more trains you will be able to have. That said, there is a limit on the maximum number of trains you can have. New trains can be purchased at the Cargo Depot. The empty cells will have a little plus sign on them, and will have a sign that says “Buy train”. You can upgrade trains to increase their capacity.
To send out a train with resources, press on the “Select resources” button in the cell with the train, load up the train, and then press “Deliver.” Once you have done that, all that’s left is to wait for the train to come back. You can speed up this process by using Megabucks.

The Universal Cargo Port on the mainland
The Universal Cargo Port is there to send out resources collected from the Industrial Complex, assuming they have been previously transported to the Cargo Depot. As you work on upgrading the Cargo Port, you will gain access to more wharfs, which in turn, will allow you to send out more resources and get more funds. You can buy a total of 6 wharfs. To purchase a wharf, press on the Cargo Port building, navigate to the Wharf tab, and press any of the empty cells.
Modernize the Wharfs to increase the amount of resources you can send out. Press “Select resources” to load a bulk freighter with resources and goods for sale. Press “Dispatch” to send them out.

New Airport at the main location
The New Airport is home to planes, that when upgraded, can transport resources from the Cargo Depot at the Industrial Complex at the main location. There are two types of planes: cargo and heavy freight planes. To send out goods from the cargo plane or the heavy freight plane terminals at the New Airport, press on one of the planes, select a contract, fill the plane with resources, and send it out. Once the plane has completed its run, gather up the profits.

Have fun playing the game!