Can I link 4 companies to one PayPal account?

[Techpik]

I have got 4 different companies and each company with its own name and bank account. Can I link all four bank accounts to my PayPal (premier account)? 

Why do I want to do so?
I'm selling eletronics on eBay and I want to optimize my costs and revenues with different companies.

So I have got one eBay account, one PayPal and 4 companies. Can I link them together? 

[Techpik]

Anyone? I read that it is possible to link 8 bank accounts to one PayPal account, but can these bank accounts all be from different source (company)?