If you haven?t seen this info already, here is another report on it and the list is now expanding. Sweet potato treats and others added to the list that have been linked to kidney failure in dogs.
http://poisonedpets.com/2012/04/06/alert-vets-warn-about-new-treats-from-china-poisoning-dogs/

Avoid ALL treats from China

Sounds like it is best to just avoid anything made in China and if that is true for all dog treats then it should be kept in consideration for human food as well.