Interconnectable Notebook Stand

Based on the Foldable Notebook Stand By Nicuz, I've redesigned this stand which is foldable to decrease material usage and final height, adjustable (3 positions 7°, 20° and 30°), portable and printable part by part.

It takes 5 hours and 50 minutes on Ender 3 Pro with standard quality.
Needed supports and do not need raft or brim.
No need for screws or nuts.