Dual-use goods and technologies to be controlled are those which are major or key elements for the indiginous development, production, use or enhancement of military capabilities. The Wassenaar Arrangement has issued criteria for the selection of dual-use items: http://www.wassenaar.org/wp-content/uploads/2015/06/Criteria_as_updated_at_the_December_2005_PLM.pdf
It issues a list of dual-use goods and technologies: http://www.wassenaar.org/wp-content/uploads/2015/07/WA-LIST-14-2.pdf. The Wassenaar Arrangement also issued “Best Practices on Internal Compliance Programmes for Dual-Use Goods and Technologies” in 2011. http://www.wassenaar.org/wp-content/uploads/2015/06/2-Internal-Compliance-Programmes.pdf