The centralized control over the economic system and the handling of exports and imports through state controlled monopolies makes trading with centrally planned economies (CPE) different than trading with most other developed and some less developed countries. Many trade enhancement or restrictive devices used in free market economies, such as tariffs and duties, health, safety and packaging regulations, quantitative restraints, special fees and credits, and domestic production or marketing taxes or subsidies are often of little concern or consequence when dealing with CPE's (Hillman, p. 499). There are, however, a different set of restrictions involving trade with these countries.