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YMTC closes gap with global rivals: Xtacking 4.0 powers 267-layer NAND, eyes 300+

China’s NAND flash race is intensifying, with Yangtze Memory Technologies (YMTC) pushing Xtacking 4.0 into mass production. The company has begun producing 267-layer 3D NAND TLC while preparing designs for devices exceeding 300 layers.