Upgrades doesn't show information to some machines (ex. centrifuge) in tooltips, and plus even if it did, the tooltip would start to get long because there's so many machines this mod adds, right?

Here's the suggestion; make upgrade tab for each machines on JEI, that acts like information tab

I don't know much about Minecraft modding but I believe it's not impossible to make multiple tabs for one machine because Thermal Expansion's Factorizer does that fine.

Something like this:

wait, thats GTNH version of NEI! looks like Bob took notice of its JEI backported features and added custom support for it. Great job Bob 👍

It should be possible to implement something like this easily if the code for the tabs mirrors how it works with the actual JEI.

if I knew how to do java and stuff this would be something I would gladly do as its a small thing :P