This references existing OECD guidance on Due Diligence for Responsible Supply Chains and its various annexes.
Duties are established in respect of import quantities identified in Annex 1 some of which are quite low e.g.
- Tin bars, rods, profiles and wires 1,400 Kg
- Other tin articles 2,100 Kg
- Tungsten wires 250 Kg
Regulation text: http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32017R0821