subsidiary, branch, division... your help needed

Temat przeniesiony do archwium.
Dear Fellow Users,

I'm employed temporarily in China and I'm trying to figure out what one could call a company that belongs to a parent company but:

a) A can take decisions on their own and engage in international construction engineering projects and bidding procedures as it owns all the necessary certificates and qualifications for construction of highways and railways.

b) B has some limitations and is more dependant on the parent company as it doesn't own the necessary certiticates and qualifications... B can't engage in international bidding procedures on their own but they can take part in bidding procedures independently as long as they do it in China.

I don't know if one could call any of these companies Limited-autonomy Subsidiary of XYZ China Corp. Ltd. I've read so many definitions of what a subsidiary/branch/office/division is that I'm utterly confused as business law isn't really my cup of tea.

Kind regards and many thanks for your help!
Ja też się nie znam, ale do'A' mogę podrzucić jeszcze Affiliate.
Maybe this will help clear things up for you a bit :

http://www.usbranchoffice.com/the-difference-between-a-branch-and-a-subsidiary.html

Looks like the subsidiary fits your A-type category?