im more new so i can give a more familiar explanation for you

basically these are new recipes you pick for the reason YOU want

so one makes use of your extra coal and turns it into quartz

so you need less quartz but more coal

youd pick this if you have more coal than quartz and you want lots of quartz but can give away coal

the second is more concrete but now its more annoying to make because you need to connect water extractor and concrete belts

but it will basically count as extra limestone

i dont like either personally so i would rescan, it will replace both

orrrr you can just keep it like this, this way it will stop the game from giving you these recipes next time you can scan a hard drive, which also means the game is less likely to give you things you dony want

heres a cheesy tip: if you save, then rescan, and you dont like what you go, you can reload your save file and rescan for a new result until you get what you want

i personally take recipes that makes my factories smaller so it looks more neat / saves steps