text:  The first <unk> palm oil refinery , <unk> <unk> Oil <unk> <unk> , was established in June 1991 . <unk> currently has four palm oil refineries : <unk> <unk> <unk> <unk> <unk> ( operated under <unk> Group , a subsidiary of <unk> International ) , <unk> Darby <unk> <unk> Oil <unk> <unk> , <unk> Palm Oil <unk> <unk> <unk> , and <unk> Oil Palm <unk> . However , as of 2015 , <unk> no longer <unk> raw palm oil produced from cleared forests and peat swamps in <unk> because of environmental concerns . 
  