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 27

EU-Switzerland Free Trade Agreement

9 RegelnToleranz: 10%1973

2701-2706Mineral fuels, mineral oils and products of their distillation; bituminous substances; mineral waxes

CTH

Manufacture from materials of any heading, except that of the product.

ODER - alternative Regel

MaxNOM

Manufacture in which the value of all the materials used does not exceed 50% of the ex-works price of the product.

50% ex-works