Dependence entails risk. Reliance on a single supplier or source for imports of a certain raw material or intermediate product makes supply chains vulnerable to disruptions and geopolitical tensions. About 12% of world trade is in product groups where a single country has a share of more than 50% of exports of that product. In about half of all cases, China is the dominant exporter, but not everywhere. This article looks at which countries dominate exports for certain raw materials, intermediate and finished goods.