The Bintulu Division has been designated as a Planted Forests Zone ( PFZ ) by the Sarawak state government since 1998 . As of 30 June 2011 , a total of 124 @,@ 618 hectares ( 1 @,@ 246 @.@ 18 km2 ( 481 sq mi ) ) has been planted with acacia trees . Other trees that are planned for plantations are kelampayan , engkabang , durian , batai , eucalyptus , and rubber trees . Sarawak Planted Forest Sdn Bhd , a company wholly owned by the Sarawak state government , has been granted a license to replant forests for 60 years . However , the company has been suffering financial losses from 2009 to 2011 .