Among the Galactic Empire's current military-industrial system, the three most important components were three industrial giants—Kuat Drive Yards, Sith Fleet Systems, and Corellia Engineering Company.
Of these three industrial titans, Corellia Engineering Company was relatively independent. Since it was primarily responsible for building large numbers of civilian spacecraft, industrial vessels, and commercial ships, although it was enormous in scale, it basically did not undertake research and development tasks for the Imperial military.
Corellia Engineering Company's current main business was contract manufacturing. After obtaining blueprints, it helped the other two industrial giants produce and manufacture their warships. Because Corellia Engineering Company was effectively responsible for keeping the lifeblood of all industries throughout the Milky Way Galaxy flowing, with vast numbers of industrial, commercial, and civilian ships built by them, even Palpatine, militaristic as he was, had not fully absorbed them into the Empire's war machine.
However, Corellia Engineering Company still had its own military production lines. The various corvettes and gunboats it produced remained active in the Galactic Empire Navy thanks to their excellent performance. Aside from small warships such as its own DP-20 anti-air gunboat and CR-90 corvette, the most important warship it manufactured under contract was the Victory II-class Star Destroyer it had previously acquired from Rendili StarDrive.
Sith Fleet Systems, formerly Republic Sienar Systems, was a massive industrial enterprise reorganized by Raith Sienar after the founding of the Galactic Empire, with the support of Palpatine's confidant, Wilhuff Tarkin.
When the Galactic Empire began restructuring the industrial system inherited from the Galactic Republic, one of its greatest changes was removing Rendili StarDrive, which had defected to the Duchy of Dawn, and replacing it with Sith Fleet Systems. Furthermore, labor within the Galactic Empire's industrial system was now more clearly defined. Sith Fleet Systems was responsible for fighters, engines, operating