Landing in Shanghai from Thailand and go back to Thailand

Hello together,
I am planning to go in November to Shanghai from Krabi to visit a friend of mine in Shanghai. I will only stay in Shanghai and will leave Shanghai in less than 72h back to Thailand - either back to Krabi or to Bangkok.
Possible for me to apply for the 72h free transit on the airport?
Thanks for your effort and help here!!!

Greetings Armin