How to become an authorized dealer

Hey guys,

I have a question,
How do you become an authorized dealer for those big brands like Yonex, Victor, li-ning, etc. :confused:
Say I want to open a shop that sells badminton stuff,
What are the requirements and where do I look for?:confused:
call Yonex directly?:confused:
Any advice would be appreciated!;)

Thanks guys!