AP Oil International Ltd is an investment holding company. Along with its subsidiaries, the company operates its business through two main segments, namely Manufacturing and Trading. The Manufacturing segment, which generates key revenue, includes the manufacturing of a range of lubricating oil and specialty chemicals for industrial, automotive, and marine applications, as well as the provision of oil blending services and the rental of cleaning equipment to its customers. The Trading segment trades in base oil and additives, and specialty chemicals. Its geographical segments are Singapore, which generates maximum revenue, Southeast Asia (excluding Singapore), the Middle East, East Asia, the Indian subcontinent, and other regions.