The bulldozer sales volume of the major 11 bulldozer manufacturers in China totals 837 units in May 2012, among which, the export volume is 356 units. In details, the bulldozer of 160-179 horse power counts most, 445 units. The next is the bulldozer of 220-319 horse power, 200 units. In the 11 manufacturers, Shantui ranks the first with 490 units. In terms of regions, Heilongjiang province ranks the first, 38 units.