Chang-Hoon Koh

MBK Co., Ltd. develops, manufactures and sells organic light-emitting diode (OLED) and sublimation purification apparatus for display products. Its products include OLED, dye-sensitized solar cell, organic field-effect transistor materials and organic intermediates. The OLED materials includes hole transport, hole injection and electron transport layers, fluorescent hose, green blue and red dopants. The firm offers sublimation services for OLED material suppliers and other electronic materials by offering vacuum sublimation purifier. In addition, it also engages in energy business, which manufactures batteries including rechargeable, acid, nickel cadmium, nickel metal hydride and lithium ion batteries. The company was founded on June 19, 2006 and is headquartered in Seongnam, South Korea.