WASHINGTON - The United States on Monday announced new sanctions on a Chinese businessman and several companies for selling to Iran items banned under US laws aimed at curbing that country's missile program.

A notice published on the Federal Register website marks at least the third time since 2006 that Li Fangwei, also known as Karl Lee, has faced US penalties for supplying material and support to Iran's missile development.

The notice said Li and a firm called Dalian Sunny Industries "have engaged in missile technology proliferation activities that require the imposition of missile sanctions" under the U.S. Arms Control Act and the Export Administration Act.