<p>➀ The US government has imposed export controls on high-bandwidth memory (HBM) and semiconductor equipment to China to prevent China from acquiring key components for AI development.</p><p>➁ The US Commerce Department's Bureau of Industry and Security (BIS) announced the addition of specific HBM products to the list of controlled items.</p><p>➂ The controls apply to products with memory bandwidth density of over 2 gigabytes per square millimeter per second.</p>