With a crude processing capacity of more than a million barrels a day, Singapore has been ranked the world's third largest oil refining centre since 1980s. The city State is now also emerging as the third biggest oil trading market in the world. AP Oil International Limited, a company public listed on Singapore Stock Exchange, was formerly known as Huan Chew Oil Trading Pte Ltd, was incorporated in 1975 as a lubricant distributor. We ventured into manufacturing in 1981 and set up the first Singaporean-owned lubricant plant in the Republic.