The Mygeetan droid factory was used by the Confederacy of Independent Systems to manufacture battle droids during the Clone Wars.
The factory was the target of the 501st Legion during their mission to Mygeeto. Their objective was to retrieve an experimental power crystal that Chancellor Palpatine wanted for a top secret project.
With some help from the Jedi Master Ki-Adi-Mundi, a squad of clone troopers managed to destroy the factory's energy collector core and retrieve the crystal.
What happened to the factory after the deactivation of the droid armies by Darth Vader is unknown.