HT Micron. part of the Hana Group in South Korea, based in Brazil, is a relatively new entrant to the DRAM chip market. It has a DRAM wafer fabrication facility in Brazil. Mosaid Technologies, although not listed, was one of the historically first DRAM design companies. Today Mosaid licenses IP Core technology to companies in the technology industry.

Because of the shortage of DRAM chip wafer fabrication capacity and the very few companies that manufacture DRAM chips, flash memory chip wafer-fab based companies in Japan and in China are exploring different ways to enter the DRAM market, develop products that will compete with DRAM. Western Digital, a leading flash module and solid state drive company, has ties with Kioxa, a major flash chip company. Micron Technology recently announced that it would acquire Powerchip in Taiwan, which has a DRAM wafer fab facility.

ChangXin Memory Technologies (CXMT)|
HT Micron
Integrated Silicon Solutions
Micron
Nanya
Powerchip
Samsung
SK Hynix
Winbond

Emerging DRAM Companies In the News
Kioxia: Kioxia to present fresh DRAM, SCM, and NAND tech in December
Kioxia: Kioxia cracks high-density 3D DRAM with stacked oxide-semiconductors, promising lower manufacturing costs without immediate consumer price drops | TechRadar

Yangtze Memory Technologies Co. (YMTC): YMTC and CXM