Spying on Sweden? Is China working on an Inter-Continental Ballistic Meatball or something?
Quite frankly, China is trying to learn as much as possible. Quite frankly, XYZ (fill in the blank with the country of your choice) is trying to learn as much as possible about research going on in other countries. To not to do so would be stupid. The line between collaboration and stealing is a fine one.
BFD--we had a president once that just gave away state secrets, and he's never seen the inside of a prison (except for his marriage, perhaps).
In other words, Sweden will once again refuse to do anything when confronted with a clear-cut case of right vs wrong.
Clearly, the Chinese are after the recipes of the Muppets' Swedish chef.
Call in the Swedish Anti-Spy Corps.
It appears to be trend impacting all Western countries. They are seizing the means of production, and the science that underpins them.
They may be getting plenty of free research by developing personal ties with the research staffs of developed countries, but like the rest of the world, the Chinese and anyone else who is interested can do a lot of this without ever setting foot in the country.
I would worry less about Chinese spies, and more about the fact that US doctoral and post-doctoral programs fill up with non-US nationals because American secondary and undergraduate educational institutions are turning out too few American "graduates" who could even read, much less make practical use of, whatever the "Chinese spies" are "stealing" (or whatever the "Chinese technicians and scholars" are "learning") in their interactions with Swedish researchers.
We are less threatened by the technical acumen of our increasingly prosperous neighbors in Asia, Latin America, and Europe than we are by the limitations of our capacity to propagate past scientific and engineering successes into the future.