China strongly opposes U.S. sanctions on a Chinese energy firm accused of violating curbs on Iran’s oil sector levied over Tehran’s nuclear program, its foreign ministry said.

Beijing firmly opposed the sanctions, foreign ministry spokeswoman Hua Chunying said, adding that China’s cooperation with Iran was normal under international law.

“We urge the U.S. to correct this wrongdoing and stop its illegal sanctions on companies and individuals,” she told.

“The U.S. has neglected the legitimate rights of all countries and randomly applies sanctions, this is in violation of international law,” Hua added.