Yangtze River, owned by Tsinghua Unigroup, is the most advanced – running 5k wafers a month of 32-layer NAND.
It is building capacity for 100k wpm for 2020 and an eventual capacity of 350-400k wpm out of three fabs.
The other two memory companies – Fujian Jinhua IC and Innotron (previously called Hefei) are to make DRAM.
Innotron is said to have begun trial production of a 19nm 8Gb LPDDR4 DRAM and expects to be in volume production in H1 2019.
Fujian Jinhua, working with UMC, says it will have its first product ready to go into production by the end of the year.