Shoppi & Tivoli Shopping Center in Spreitenbach AG (15 min. from Zurich), if you click on "Geschäfte" then "Asien-Shop" you will come to a map which shows you exactly where it is located in the Tivoli side of the Mall. I'm pretty sure it is in fact a Korean shop and not a Thai / Chinese shop.
Their phone number is 056 401 31 19 if you want to call and ask first.