Dear sir,
I am PhD. student in china, I sent invitation letter from my university for my family to bring them to china. my questions are:
1- why should I go to the local public security bureau to have the invitation letter stamped. that the other embassies of china in other countries dont need do that thing, for examples my friends in Bakistan bring their families by the invitation of the university only with out the stamp of the public security bureau, that my family now in Syria waiting for visa and they have not the time to wait to do another stamp, therefore, I suggest to complete this visa wothout this stamp, and if you need assure or any other informations you can contact directly to my university from the Number shown in the invitation letter.
2- my family also have passport type A. is this type is dependent now in your empassy??