Matter
We have various types of our own matter, which can be used in crafting recipes to tier up your existing collectors, relays, etc. The original matters from ProjectE are also used in some recipes.

Each also has their own block.
Crafting Matter
Items
Crafting requires both 3 pieces of matter of the previous tier (red matter from ProjectE for magenta), and 6 fuel of the previous tier (aeternalis fuel from ProjectE for magenta).

Blocks
Crating the blocks takes 4 of the same tier of matter.
Fuel
We've also got various tiers of fuel, all mainly used for crafting. They do have a burn time, but it is the same across the board. The original fuels from ProjectE are also used in some recipes.

Each also has their block variant, these aren't used for much.

Crafting Fuel
Items
Crafting requires 4 pieces from the previous tier (aeternalis fuel from ProjectE for magenta) and a philospher's stone*.

Blocks
Crafting requires 9 pieces of the same tier.

Screenshots and testing were done in 1.19.2 with 1.0.10.