

How to do with baby born in China by Swedish father and Chinese mother that are married?
I am a Swedish citizen and married to a Chinese citizen. We have house and wants to stay over there for a longer time but go hack home once/year for visit my parents.
We will have a baby in the end of this year and in regards to that I have a few questions.
Our baby will be considered Chinese as the mother is and the baby is born there.
However the baby will also be Swedish citizen by birth as I am.
If we get a Swedish passport for the baby i.e. renounce the Chinese citizenship, we will have to get a entry/exit stamp in the Swedish passport by local PSB before leaving. How long validity is this exit stamp i.e. how long time can we stay in before this exit stamp expires?
When we return to mainland, the baby will need a visa but if baby and mother, who is Chinese, wants to stay a longer period of time what kind of dependent can the baby get. They will stay for more than 12 months between visits to Sweden. Myself have been holding L multiple with 12 months validity, dont need more as I am working at sea and work 8 weeks followed by 8 weeks vacation.
How long will that kind be valid and how long stay will it be as most? (Will it be a Z?)
What kind of paperwork is needed when apply for it?
Is there any other type as dependent possible and how is the procedure for that?