The FBI has raided a laboratory in San Diego belonging to Huawei Technologies as part of an investigation related to AKHAN Semiconductor, a start-up based in Gurnee, Illinois, according to a report from Bloomberg.
AKHAN Semiconductor accuses Huawei of breaking and possibly attempting to reverse engineer a sample of its proprietary Miraj Diamond technology, which uses a micro diamond film to create very strong glass. The technology potentially could be used for smartphone screens and for military applications. AKHAN provided a sample to Huawei, which was later returned in damaged condition.
https://www.bloomberg.com/news/features/2019-02-04/huawei-sting-offers-rare-glimpse-of-u-s-targeting-chinese-giant