郭鶴年
Martua along with Kuok Khoon Hong, the nephew of Malaysia's richest tycoon Robert Kuok, founded Wilmar International Limited and by 1991 he owned 7.100 hectare of palm tree plantations, and also built his own palm oil refinery in North Sumatra. The Wilmar International business has grown rapidly; by 2013 Wilmar owns more than 50 other companies with 300 manufacturing plants around the world. Martua also owns London skycraper Aviva Tower and a hospital in Medan, Murni Teguh Memorial Hospital, which is named after Martua's mother, Murni Teguh. The hospital was launched on 12 December 2012 (12/12/2012).