A simple foundry belt mall that uses circuit logic to ensure a steady supply of each belt type. Let it run for awhile and adjust the circuit conditions to add more to your chests as you prefer.
Not build for speed, mostly just for that sweet productivity bonus. Don't want to use bots? Swap out the chests for belts. There's nothing elegant about this blueprint, I just found it useful and there does not seem to be similar on this site.
The green belts cannot be produced on planets besides Vulcanus - so try to use it there.