Flames of Revolt
Based on Mars, Ventex is one of the oldest megacorporations still in operation. It is one of a very few that were around before the wars. Ventex began as a small manufacturing conglomerate. It has grown to a solar system spanning giant. Some would say, since several products of Ventex manufacture have travelled to several local star systems, that their reach is well beyond this system.
If you can manufacture it inexpensively, Ventex likely does. Clothing, vehicles, food stuffs, pharmaceuticals, artificial and cloned organs, etc. The list is so long it’s said even Ventex doesn’t know everything Ventex makes.