SK Hynix Inc. (KRX: 000660) is a South Korean memory semiconductor supplier of dynamic random access memory (DRAM) chips and flash memory chips. Hynix is the world's second-largest memory chipmaker (after Samsung Electronics) and the world's fifth-largest semiconductor company. Founded as Hyundai Electronic Industrial Co., Ltd. in 1983 and known as Hyundai Electronics, the company has manufacturing sites in Korea, the US, China and Taiwan.