According to the statistics of China Construction Machinery Business Online, the total roller sales volume of the 20 major road roller manufacturers in China is 1,247 units in June 2012, among which 280 units are exported. In details, Jiangsu province ranks the first, 74 units. In the 20 manufacturers, XCMG ranks the first with the sales volume of 229 units. In terms of the tonnage, the 20t single drum mechanical roller counts most, 216 units.