AP Oil International Ltd. is an investment holding company, which engages in the manufacture and sale of lubricating oils and fluids for industrial, automotive, and marine applications. It operates through the following segments: Manufacturing, and Trading. The Manufacturing segment produces a range of lubricating oil and specialty chemicals for industrial, automotive, and marine applications, as well as the provision of oil blending services. The Trading segment focuses on the trades in base oil, lubricant components, commodity chemicals. The company was founded by Woon Chan Lau on December 24, 1975 and is headquartered in Singapore.