LOS ANGELES—In two separate cases, three men have been sentenced to federal prison for attempting to transport sensitive and advanced U.S. technology to the People's Republic of China (PRC). Two men were sentenced yesterday, and another man linked to one of the schemes was sentenced last week to five years in prison. William Chi-Wai Tsu, 61, a Beijing resident, was sentenced yesterday to 40 months imprisonment for his role in exporting high-tech integrated circuits with military applications to the PRC. In a separate case, Tah Wei Chao, 53, of Beijing, was sentenced yesterday to 20 months imprisonment after pleading guilty...