Intern-ship visa

I am an Iranian passport holder living in France. For completion of my studies i want to go to china to do my internship and i found my enterprise as well, but the problem is that while the company was applying to send me an invitation letter the local government of that area has said that they have never deal with internship kind of invitation letter, thus they can not issue it. As an Iranian I was wondering if there is any other possibility for me to get different kind and be in China for a period of one month to do my practise ?