1. Congo: Implements a cobalt export quota system;
2. Indonesia: Bans nickel ore exports;
3. Zimbabwe: Restricts exports of lithium concentrate and unprocessed minerals;
4. Namibia: Restricts exports of unprocessed lithium, cobalt, graphite, and rare earth elements;
5. Ghana: Restricts exports of unprocessed lithium;
6. Malawi: Restricts exports of unprocessed minerals, including graphite;
7. Tanzania: Restricts exports of copper and nickel ore.
(Compiled from Logic Universe, an independent overseas geopolitical data observation agency)