Re-entry to China from Thailand

Hi!
I am Mexican and I am currently in Shanghai since January, holding an F visa, 1 single entry. I am planning to visit Thailand in July for no more than 10 days and then come back.

Since mine is only 1 entry, my question is: Can I apply for a new one in Thailand just to come back? I just need to re-entry.

Thanks in advance, hope someone can help me.
Patricia Garcia