I have been quite often to SZ/HK, and knowing a lot people with electronics industry, sadly in general no one there cares about Nokia/Microsoft anymore, even if they do, no one has ever heard this module. Futhermore Nokia did not manufacture around Shenzhen (They used to have a feature phone factory in Dongguan near Shenzhen), and all N950s are made in Finland/Korea(early prototypes).

I would say Finland or Microsoft warehouses has a better chance.