Companies are added to the unverified list because the United States could not complete on-site visits to determine whether they can be trusted to receive sensitive technology exports from the United States.
U.S. inspections of Chinese companies require the approval of China's commerce ministry.
Under the Biden administration's new policy, if a government prevents U.S. officials from conducting site checks at companies placed the unverified list, Washington will start the process for adding them to the entity list after 60 days.
The United States removed a unit of Wuxi Biologics, maker of ingredients for AstraZeneca's COVID-19 vaccine, from the unverified list.
The company looks forward to scheduling an inspection of its Shanghai subsidiary, which also was placed on the unverified list in February, she added.