issued by the Ministry of Sience and Technical at Circular No. 20/2009/TT-BKHCN dated on 30 September 2009.

Circular was published on Gazettee on 18 November 2009, take effect in 6 months after signed date; replace Decision No. 16/2007/QD-BKHCN dated on 27 August 2007 of the Ministry of Sience and Technical on promulgated the "National technical regulation on gasoline, diessel fuel oils and biofuels".