I am a flight crew member and planning on bringing to 3 family members for a 72 hour layover in Shan

I am a flight crew member on a flight from Amsterdam to Shanghai and planning on bringing 3 family members for a 72 hour layover in Shanghai. After this time they will fly with me back to Amsterdam. Are they allowed to make use of this 144 hour visum or do they have to have a regular visum?