Anticipating increased demand for 3D NAND flash storage in the coming year, Samsung is looking to invest an additional US$2.6 billion to expand production capacities of its NAND factories in China and Korea taking the total investment to US$9 billion by 2019. The increased investments are being centered around production of 3D NAND flash, V-NAND flash, and QLC flash memory.
https://www.notebookcheck.net/Samsung-to-invest-additional-US-2-6-billion-to-increase-NAND-production-in-2019.317608.0.html