SK Hynix's Solidigm unit is weighing NAND memory chip factory in US, sources say ↧ ↧ SK Hynix's Solidigm unit is weighing NAND memory chip factory in US... Chipmaker SK Hynix's subsidiary Solidigm is considering building a NAND flash memory chip factory in ​the US, with upstate New York emerging as a leading candidate, three people familiar with the matter said.