Huawei uses mobile chips and PC processors from Qualcomm and Intel, but can't continue to take delivery of those parts now that it's on the Entity List. It is also losing other Apple suppliers, including RF component maker Qorvo, Xilinx, as well as memory chips from Micron Technology and Western Digital, and laser component makers Lumentum and Finisar.
Further, complex legal structures related to intellectual property rights mean that Huawei is also losing the supply of microcontrollers and power management integrated circuits from foreign companies like Germany's Infineon. Toshiba and Japan Display are also reviewing whether they can continue to supply components to Huawei.