Switzerland has two main supermarket chains. Migros and Coop. At least one of them is present in almost every village. Most of the products mentioned on the kosher list are available in one of those two shops.
Bread: Migros and Coop have various bakeries throughout the country. That's why a bread which is kosher in Zurich is not necessarly kosher in Interlaken as well. Make sure to buy only those breads mentioned below the name of the city/village of the shop. Migros has product numbers which need to be identic (also no added numbers).
Migros uses numbers on all their products. Please check the number. Several products look very similar but have another number and are therefore not kosher.
There are no milk products on the IRG Zurich list. A list including cholov akum products is available at "ICZ/Koscherliste". Please note: this list is out of my control and responsibility. I also take no responsibility that the site is up to date.