Scrap metal is often subject to export quotas or environmental taxes in the country of origin. Buyers must verify if the supplier possesses a valid Export License for Waste Materials. For imports, check your local Environmental Protection Agency (EPA) regulations, as some countries require specific import permits for solid waste to prevent the dumping of hazardous materials. Always use HS Code 7204.41 (Turnings, shavings, chips, milling waste, sawdust, filings, trimmings and stampings) or 7204.49 (Other ferrous scrap) for correct duty calculation.