To develop those warheads, Chinese researchers need high-performance computing (HPC), and because they cannot build powerful supercomputers based on leading-edge chips developed in the U.  Still, CAEP continues to use PCs and servers based on recent Intel and Nvidia hardware, since it is impossible for the U. Bureau of Industry and Security expanded on this idea, telling the publication, "As mass-market products move through multiple parties in global supply chains, full visibility on ultimate end users is a large undertaking