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Aluminum producer Press Metal makes its debut on the list with a market capitalization of $4.7 billion. The Malaysian company, started by CEO Koon Poh Keong and his six brothers, generated $2 billion in annual revenue with a net profit of $138 million last year. Since investing a total of $1.2 billion in its two aluminum smelting plants in Sarawak, Press Metal has a capacity of 760,000 tons a year, the largest in Southeast Asia. Koon is also featured on the cover of the latest issue of Forbes Asia.