A company majora has a signifigant hold on a section of Arbor. This could mean physical space such as control of a number of branches, resources or a method of transportation. Each of these groups will most likely have a seat upon the The Silver Council but this is not a guarntee and is not a strict requirement for being recognized as a company majora. The other differentiator is that a company majora is not beholden to other powers in the way that most company minora are.