According to the statistics of China Construction Machinery Business Online, the total roller sales volume of the 22 major road roller manufacturers in China is 741 units in November 2012, among which 176 units are exported. In details, Jiangsu province ranks the first, 49 units. In the 22 manufacturers, XCMG ranks the first with the sales volume of 196 units. In terms of the tonnage, the 20t single drum mechanical roller counts most, 122 units.