AP Oil International Limited, an investment holding company, manufactures and sells lubricating oils and fluids, and specialty chemicals for industrial, automotive, and marine applications. It operates in two segments, Manufacturing and Trading. The company offers automotive lubricants, including gasoline and gas engine oils, diesel engine oils, motorcycle engine oils, and specialty lubricants and fluids; and industrial lubricants, such as chain, compressor, gear, gas engine, heat transfer, paper machine, slideway, textile, transformer, turbine, and white oils, as well as hydraulic fluids and pneumatic tool lubricants. It also provides metal working oils and fluids, such as neat cutting oils, rust preventive fluids, stamping and forming fluids, and water-soluble cutting oils, as well as various greases, SINO industrial lubricants, marine lubricants, greases, and industrial special oils and fluids. In addition, the company purchases and sells raw materials used for lubricants and specialty chemicals manufacturing comprising base oils, chemicals, and finished products, as well as lubricating oils, base oils, additives, and petrochemical related products. It operates in Singapore, Southeast Asia, East Asia, the Middle East, the Indian subcontinent, and internationally. The company was formerly known as Huan Chew Oil Trading Pte Ltd. AP Oil International Limited was incorporated in 1975 and is based in Singapore.