SK hynix creates world's densest 321-layer NAND flash memory chip ArirangNews 0 9 11.21 19:09 https://www.youtube.com/watch?v=GlvSAmgpXSw + 1 https://www.youtube.com/feeds/videos.xml?channel_id=UCzznO4xSV8BKnUBPy… + 0 SK hynix creates world's densest 321-layer NAND flash memory chip