The U.S. Commerce Department on Friday announced export restrictions on dozens of entities, including a Chinese distributor of high-technology equipment that markets various products from U.S. and European firms.

For decades, Beijing E-Science Co., Ltd. has provided companies and scientific research institutes with advanced equipment for uses in physics, optics, material science, nanotechnology, environment, food safety and other fields, according to its website. The company also has an application demonstration center, where customers can test the instruments and equipment, the website said. It frequently exhibits the technology at industry conferences, promoting the appearances and equipment on offer.

E-Science, its main owner, Beijing Hileed Solutions Co., Ltd. a third company and Wingel Zhang, an E-Science sales and marketing specialist, were listed Friday by the Commerce Department for exporting, and attempting to export, controlled items to an entity on the U.S. sanctions list without the necessary licenses. The U.S. listing did not identify the items or the buyer involved.

Hileed Solutions was itself sanctioned in 2006 under another name, Beijing Alite Technologies Company, Ltd., over its efforts to provide Iranian missile organizations with dual-use and other missile-related components. Hileed Solutions has majority owned E-Science since at least 2013, the earliest period Chinese corporate records began disclosing shareholding stakes; under U.S. sanctions regulations, an entity majority owned by a designated party is legally blocked.

Kong Minxian owns an 80 percent stake in Hileed Solutions, and is its general manager and a director, records show. Kong also is chair of the board at E-Science and holds the remaining shares, according to corporate records. Kong also owns two companies in Hong Kong; one of which, Info Rank Technologies, was also listed in the action by the Commerce Department. The other company, Kingtech Development (Hong Kong) Limited, is majority owned by E-science, records show.