After the terrorist attacks on September 11, 2001 (9/11 attacks), World Customs Organization (WCO) became aware of the global supply chain security system and international trade by emphasising on the procedure of the supply chain security from source to end. The establishing of Standard Framework to secure global supply chain and facilitate global trade called SAFE Framework of Standards to Secure and Facilitate Global Trade (WCO SAFE FoS). One of the main mechanism of the WCO SAFE FoS is the Authorized Economic Operator (AEO) programme. WCO members have submitted the Letter of Intent to implement this Standard Framework. WCO, member, Thailand also adopted the SAFE FoS by signing the Letter of Intent on May 9,2006 to express intention to implement the WCO SAFE FoS and stimulate awareness of global supply chain security between Thai Customs and private sectors. The AEO Programme implementation has been taken since 2007 and continues onward.