Chinese companies and government officials are rushing to find out how to comply with U.S. sanctions on Russia, easing concerns in the White House that Beijing would help Vladimir Putin evade them.

Chinese diplomats in Washington have been in contact with U.S. counterparts asking for granular details on the sanctions, according to people familiar with the situation who asked not to be identified. That’s encouraged U.S. officials, even though they remain wary that China may simply be looking for loopholes to help Russia, the people said.

For now, they added, there’s no consideration of imposing Iran-style secondary sanctions.