There is no trace of Shenzhen Lanhao Days Electronic Technology Co. Ltd. at its listed address in the beige and pink-tiled "Fragrant Villa" apartment complex in this southern Chinese city. The building's managers say they've never heard of it.

But a Western intelligence report reviewed by Reuters says Shenzhen Lanhao is one of several companies in China that receives money from Iran through a Chinese bank. Such transfers help to finance international operations of the Islamic Revolutionary Guards Corps' elite Quds force, the report said.

The Quds provides arms, aid and training for pro-Iranian militant groups in the Middle East, such as Hezbollah, Hamas and Shiite Muslim militias in Iraq. They have also armed and trained government forces in Syria's civil war in violation of a U.N. arms embargo, U.S. and European officials say.