Circular No. 29/2011/TT-BGTVT dated April 15, 2011 of the Ministry of Transport amending and supplementing a number of articles of the Regulation on inspection of quality, technical safety, and environmental protection of Imported motorcycles and mopeds and imported engines used for motorcycle and moped manufacture or assembly, promulgated together with the Minister of Transport's Decision No. 57/2007/QD-BGTVT of November 21, 2007, and the Regulation on inspection of quality, technical safety and environmental protection in motorcycle and moped manufacture and assembly, promulgated together with the Minister of Transport's Decision No. 58/2007/QD-BGTVT of November 21, 2007