The RoHS (Restriction of Hazardous Substances) directive requires that exporters certify electronic components are free of certain hazardous materials through the placement of a certification sticker on the unit.

RoHS Directive: This European Union directive restricts the use of specific hazardous materials found in electrical and electronic products. The goal is to reduce environmental impact and increase recycling and reuse of electronic equipment.

Certification: Exporters must certify that their products comply with RoHS standards by labeling them accordingly. This ensures that products are safe and meet environmental regulations.

European Union. (2003). Directive 2002/95/EC on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS). Official Journal of the European Union.

O'Connor, S. (2006). RoHS Compliance: A Guide to the RoHS Directive. IT Governance Publishing.