Yoosung Enterprise Co., Ltd. is engaged in the manufacturing of automobile parts and accessories for motor engines. Its products include piston rings, cylinder liners, LSVAC(Loose Sand Vacuum Assisted Counter-gravity casting), air compressors, camshafts and valve guides. The company was founded on March 18, 1960 by Ryu Hong-Woo and is headquartered in Asan-si, South Korea.