1、power plant
XP303S using on the firewood SC7H180.2G3 country three electronic control diesel engine, with high reliability and fuel economy, low noise, low emissions meet the country Ⅲ stage standards. 

2、the transmission system
The drive is made of imported variable pump, variable motor composed of closed hydraulic drive system to ensure that the roller has a good drive performance and high climbing ability. Two stepless speed change, to ensure that under different conditions at the most appropriate speed of operation. 

3、air control system
The air control system is divided into braking system and centralized inflatable system. 

4、the fuselage
Fuselage with box-type structure, the middle of the two sides can increase the weight. The fuselage parts are designed with maintenance holes and clamshell cover to facilitate the maintenance and maintenance of various parts.

 5, front and rear wheels
The tires are distributed in the first four after five. The front wheel swing frame is driven by the cylinder to achieve steering, and can achieve mechanical swing. At the same time each group of two tires can also achieve swing.