Maximized graphene production from a single logistics station. Produces 120 graphene/sec and 60 hydrogren/sec. It's the perfect length to wrap around the equator 4 times (the second screen shot shows how much room there is between sequential blocks). I also recommend creating an additional, fire ice-only logistics station, as shown in the third screen shot.
Side note; do you suppose "fire ice" is supposed to be "dry ice?" That's my guess.