Would like to apply for a Business Visa but I have no contacts in China?

Hello I would like to apply for a M type to go to China to look for a job but I don't have any contacts to send me an invitation. How could I write it down to make them more likely to give me a one year multiple entry one? I am a US Citizen and a recent University Graduate. I can't get any Business to approve an invitation letter.

Thank You.