SK hynix Inc., South Korea's No. 2 chipmaker, said Tuesday that it will buy the NAND business of US semiconductor giant Intel Corp. in a deal worth 10.3 trillion won ($9 billion) to help the company vault to become the world's second-largest NAND flash chipmaker. SK hynix said it will acquire all of Intel's NAND flash business, except its Optane memory unit. The deal includes Intel's solid state drive (SSD) business and its factory in Dalian, China. SK hynix said it will pay Intel 8 trillion