The efforts to reduce the dependence on U.S. technology are constantly fueled with new developments endorsed by the Chinese government. After the Jhaoxin CPUs and the Jingjia Micro GPUs, China is now preparing to enter the memory market with the ChangXin DRAM modules that are expected to be available in 2020.
https://www.notebookcheck.net/China-starts-producing-its-own-DRAM-chips.435533.0.html