What is the tolerance threshold under the Ceuta & Melilla?

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

Ceuta & Melilla - HS 42

EU Autonomous Preferences for Ceuta and Melilla

1 RegelnToleranz: 10%

4200-4299Articles of leather; saddlery and harness; travel goods, handbags and similar containers; articles of animal gut (other than silk worm gut)

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

ODER - alternative Regel

MaxNOM

Manufacture in which the value of all the materials used does not exceed 70% of the ex-works price of the good.

70% ex-works