To be able to sell products, you need to unlock the field.
In your logistics warehouse, a button will appear on each product to open or close it for sale. By using this, you can put your products up for sale. There will be 3 options.
Closed for Sale - Your products are not sold to other players!
Open for Sale - Your products are sold to other players up to the Reserve Amount (to be added later) you set (See Reserve Amount)
Cooperative - Your products are sold only to players in the Cooperative you are a member of (Reserve Amount is still checked)
Also, you can change the status with the i button and edit the Reserve Amount.
Important Note: Revenues from sales made from the Logistics Warehouse accumulate under the Current Account in the BANK, they are not posted directly to your CASH account. From there, you can transfer them to your account whenever you want.