The United States on Tuesday prohibited all transactions with four Chinese companies and one US company for allegedly helping Iran acquire weapons of mass destruction and missiles capable of delivering them. "The companies targeted today have supplied Iran's military and Iranian proliferators with missile-related and dual-use components," said Stuart Levey, undersecretary for terrorism and financial intelligence at the US Treasury. He urged governments worldwide to take appropriate measures to ensure that their companies and financial institutions are not facilitating Iran's proliferation activities. Three of the Chinese companies are Bejing Alite Technologies Company, Ltd; LIMMT Economic and Trade Company, Ltd and Great Wall Industry Corproration. The company with US connections is China National Precision Machinery Import/Export Corporation, whose US representative is G.W. Aerospace, Inc., based in California.