Corp (YMTC) is a Chinese semiconductor specializing in (NAND) chips. Founded in, China in 2016, the company received backing from. Prior to YMTC, China had no company capable of producing flash memory. Its consumer products are marketed under the brand Zhitai. In 2020, YMTC was using a 20 nm process to make 64-layer 3D NAND flash. In April 2020, the comp.