China is building an entirely independent semi conductor supply chain and if they are not competitive now, they will be in the near future. US sanctions forced them into turbo charging their efforts.

I have two SO-DIMM sticks of a domestically produced Chinese brand named FASPEED, with chips bearing logos and markings that I don't recognize from anywhere else. These sticks' mfg. datestamp is "44-24" and from what I've learned they cost little in China but come with a salted price tag when sold through channels aimed at Western customers. I'm not sure if they come in fast-enough variants to compete, and not sure about the quality or longevity otherwise. FASPEED makes SSDs, too, but I have no data on those. I also have an M.2 SSD from another Chinese brand called XINCUU which I previously had never heard about. The label of that SSD is in parity with expectations of Chinese business morals - it claims to be PCIe NVMe with "1000 MB/s speed" but is in reality a SATA device, and it does not perform even close to the ~550 MB/s limit of SATA 3.0. Both of these run unusually warm for DDR4 memory and M.2 flash storage, leading me to believe they are wholly designed and produced in China.