As far as I know most Z products have manufactured locations listed under the About sections on the product pages. They may not say the country they are made in but will say "imported". You'll have to look on product pages to find if they are made in the US or "Imported". Many just say "printed in the USA".
You can sometimes find this information. For example, on the product page for any of the Hershey's miniatures, appears the following info:
Style: Hershey®’s Assorted Miniatures™
They may be mini, but they’re sure to be a huge hit! Add a sweet touch to your special occasion with personalized Hershey®’s Assorted Miniatures™. These mini candy bars are so charming they are almost too good to eat! Hershey®’s Miniatures™ offer a variety of chocolate bars for everyone. The bars come in an assortment of Milk Chocolate, Krackel®, Special Dark®, and Mr. Goodbar®. Please note that Special Dark® Miniatures™ have gold foil ends.
