Period of utilization: extensions by competent customs officers permit timely use and installation of imports under EOU exemption. Period of utilization under the 100% Export Oriented Unit scheme requires imported raw materials, spares and consumables to be consumed within three years of import and imported capital goods to be installed within one year, with the jurisdictional Assistant Commissioner or Deputy Commissioner of Excise/Customs empowered to grant extensions, which should be liberally allowed for operating units.