The American Export Control Regulations (EAR) divide countries in the world into five groups:
Group A: Allies of the United States, including the European Union, Japan and South Korea.
Group B: Most countries in the world.
Group C: No country has been added for the time being, and it is blank.
Group D: Countries that the United States considers a potential threat to itself, such as China, Russian Federation and Venezuela.
Group E: North Korea, Iran, Cuba, Sudan and Syria.
Ears:
EAR is the abbreviation of Export Administration Regulation, which means export control. All products produced or in transit in the United States are controlled by the United States export control regulations. EAR not only controls exports, but also controls the resale (re-export) of export products outside the United States.
In addition to the control of American products, as long as products outside the United States use a certain proportion of American controlled products or technologies, the United States also has jurisdiction in accordance with the ear, which is called long-arm jurisdiction.