The puppies can leave after they have passed their four month age.
They all get KC vaccine when they are 4 weeks old, after it they get three obligatory vaccinations (1xParvo, 2xDhppi) and they all get Rabies vaccination.
The puppies leave with EU Passport, and the FCI export pedigree will be sent to the new owner, when it is ready.
The puppies are all vet checked before the travelling.
I do not have to say of course the parents are also vet checked, Xray is done for spine and trachea, they have breeding test, and they are examined for general state and condition and for hereditary diseases.