How many working days take to get visa to go to China/Beijing?

I'm petroleum engineer, I work for Iraqi ministry of oil, I have a training course with a big petroleum company which works in Iraq.I'll go to Beijing to do this training course.The company asked me to fill the application, sending the original passport, photos, and do the medical test. I sent all of these documents, original passport and photos to the petroleum company, the company told me that it will send all of my document, original passport and photos to the embassy by its coordinator.So my question is:
How many working days take to get it?