Returns, repairs, processing

The linked page below will provide you with information on the topic:

You will find questions and answers about the coronavirus at www.ch.ch (in German, French or Italian).

https://www.ezv.admin.ch/content/ezv/en/home/information-private/reisen-und-einkaufen--freimengen-und-wertfreigrenze/ausfuhr-aus-der-schweiz/ruecksendung--reparatur--veredelung.html