For my part :
(Which is also going to be an excuse to showcase my base.

Fawogae & Coke :

Nice early game, though gets weirder as you go, as it then gets less of a waste to just put Water => Plantation => HPFurnace => HPFurnace chains whenever you need Fawogae / Coal /Coke... but maybe I'll get back to centralized Fawogae production if I end up running a fertilizer excess ? You can see one Plantation that I set up to dynamically switch from the plain recipe to the one with fertilizer...
Aluminium & Duralumin plates :

Obviously.
Iron & Steel plates :

Ditto.
(But sometimes Iron & Copper : )
Tin & Glass :

Just laid :
Ash & Organic matter :

Wish that I had planned & laid that long before, running around ferrying ash got annoying...
Chromium plates & Salt :

What did you decide to pair together ?