What is the tolerance threshold under the EU-Switzerland?

The general tolerance is 10% of the ex-works value of the finished product.

EU-Switzerland - HS 16

EU-Switzerland Free Trade Agreement

1 RegelnToleranz: 10%1973

1600-1699Preparations of meat, of fish or of crustaceans, molluscs or other aquatic invertebrates

Manufacture in which all the materials of chapter 2, chapter 3 and chapter 16 used are wholly obtained.