Sales expenses last year it was more from the 2013 and 2014 to advertising and promotional projects that increase because airlines operating base moved to the Don mueang airport and great offers on new routes that opened during the year.
The cost of sales in 2013 and 2014, but much of their advertising and promotional projects increased due to the relocation of the airport to Don Muang Airport and the promotion of the new flight path. Opened during the year
Cost of sales over the years 2013 2014 and much more from advertising and promotional projects increases due to the move to don Muang airport aviation operation base and the promotion of new routes. Opened during the year .