Circular No. 05/2003/TT-BTM dated July 31, 2003 of the Ministry of Trade guiding supplements to Joint Circular No. 54/2003/TTLT-BTC-BTM dated June 3, 2003 of the Ministry of Finance and the Ministry of Trade which guides the reduction of import tax on goods of Lao origin specified in the August 13, 2002 Vientiane Agreement between the Government of the Socialist Republic of Vietnam and the Government of the Lao People’s Democratic Republic