A man accused of trying to smuggle more than $500,000 worth of military computer equipment to China has pleaded guilty. Philip Chaohui He, also known as Philip Hope, pleaded guilty to violating the federal Arms Export Control Act and to smuggling charges. Prosecutors say he bought almost $550,000 worth of memory circuits from the Colorado company Aeroflex and tried to ship them to China in baby formula containers. He was arrested in December of 2011 and at the time was an engineer on the new eastern span of the San Francisco-Oakland Bay Bridge.