Koo Bon-sik Net Worth
$1 Billion | Rank #2448 Who is Koo Bon-sik He is the youngest of the four Koo brothers of the LG Group. Heesung is LG’s largest supplier of backlights, which are used to illuminate LCD displays. Heesung group’s affiliates include LT Precision, LT metal and LT Material. Koo Bon-sik …