If you're a startup (no revenue; untested business model) – from investors: venture capitalists; family and friends.
If you're an established business (profits; proven revenue model) – from a bank.
If you're an upstart – (revenue but no profit; business model in need of development) – from a combination of both the above.
In all cases, you will need two fundamental things:
It all depends what stage your business is and how well you know your customers. Without knowing this it is hard to give you a good answer. Feel free to contact me directly and I'll see how I can help.