According to channelnewsasia, SEOUL, Aug 7: South Korea's SK Hynix said on Friday that its board had approved about 54.3 trillion won ($38.30 billion) of investments through 2031, including 35.2 trillion won for the second phase of construction of its chip fabrication plant in Yongin and 19.1 trillion won for its M17 chip plant in Cheongju.