The airline suspended operations on 18 August 2006 after its parent company, China Great Wall Industry, had sanctions imposed on it by the United States Department of the Treasury for allegedly supplying missile technology to Iran. All aircraft were returned to Singapore Airlines Cargo. On 13 December 2006, it was announced that sanctions against Great Wall Airlines had been lifted, and that the airline would resume service in February 2007. The airline resumed scheduled services to Amsterdam (six times weekly), Incheon (six times weekly) and Mumbai/Chennai (three times weekly). As of April 30, 2007 Great Wall Airlines also launched scheduled services to Manchester via Amsterdam (two times weekly).