According to the statistics of China Construction Machinery Business Online, the total roller sales volume of the major 22 road roller manufacturers in China is 1,055 units in February 2012, among which 264 units are exported. In details, Henan province ranks the first, 58 units. In the 22 manufacturers, XCMG ranks the first with the sales volume of 161 units. In terms of the tonnage, the 20t single drum mechanical roller counts most, 197 units.