Trading is possible either with NPC, or with other players when playing on-line. Trading is pretty much required to gather large quantities of gas, salt and cement.
Each survivor camp shelters has a trader. Exception is Magnitorosk, with two traders. They will barter items for differents items, and each one will offer you a specific trade.
Some of the items you can receive from trading in a camp can be traded at another camp. Thus, it's possible to create chained trades or routes, as shown in the following Google doc spreadsheet. This spreadsheet is helpful for checking available routes, calculating trades payback, or calculating total payload to chose the right vehicle.
Have a look at the world map to plan your trips!
Trade map(v.574 - Needs update).
(Last update v.596)
Lecture help: like in game, deliver the items in the right column, to obtain the items on the left column. Arrows shows the transformation direction.
You can also look at Trade routes organized as a table in this page (updated).
There's an interactive trade router.
Link to ancient trade place : User blog:Angreyyoungsoldier/Trading centre
Ratios are not official, feel free to add actual transactions to build a relevant database.
- 10 Coal = 1 acid = 1 steel
- 1 moonshine = 20
- Tanning mixture = 5-7 acid