As part of the Revenue Package Phase III Action Plan, the WCO has updated the Customs Laboratory Guide by adding information on Regional Customs Laboratories. The CLG is a practical handbook for the establishment and improvement of Customs laboratories. New Appendix V adds contact information for the Regional Customs Laboratories (RCLs) and links to relevant information. According to the WCO, the RCLs play a vital role in enhancing regional capabilities by providing information and training. Appendix V also contains the ‘Procedures and requirements for establishing a Regional Customs Laboratory’, recently approved by the HS Committee at its 61st Session in March 2018.