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 1025 units in August 2012. In the 22 manufacturers, XCMG ranks the first with the sales volume of 176 units. In terms of the tonnage, the 20t single drum mechanical roller counts most, 159 units; the next is 22t above single drum mechanical roller, 156 units.