Regarding "industrial espionage" whereby the Chinese stole U.S. technology for bulk acoustic wave technology, IHS said in its Q2 MEMS Market Tracker Report that "The US Attorney General has accused Tianjin University Professors Hao Zhang and Wei Pang along with four other people of economic espionage on Avago Technologies and Skyworks Solutions regarding their thin-film bulk acoustic resonator technology . Pang and Zhang started working on FBAR technology during their PhD studies in the United States with a grant from the Defense Advanced Research Projects Agency before they joined Avago and Skyworks.