All exports are subject to licensing under regulations issued in 1948
except that export licenses are not generally required for shipments to
Portuguese overseas provinces. Portugal's export trade with the Soviet
bloc is not important and consists almost entirely of cork, which is
not on any strategic or restricted list. The Portuguese colonies exert
varying degrees of export control. On January 23, 1952, the Government
of Macao adopted a trade-control system which requires a license for
the import and the export of strategic materials. Strategic materials
are shipped from Portugal to Macao only against import certificates
issued by that province.