Engine (diesel) displacement: below 2.5L; The refrigerated truck is less than 3.0L, and the interior width of the trunk is less than 2 100 mm ... Liangshan Yi Autonomous Prefecture is an autonomous prefecture under the jurisdiction of Sichuan Province, located in the southwest of Sichuan, bordering Ya 'an and Ganzi Prefecture from Dadu River in the north and facing Yunnan Province from Jinsha River in the south. Liangshan's requirements for small dump trucks are that the engine (diesel) displacement is below 2.5L; The refrigerated truck is less than 3.0L, and the interior width of the trunk is less than 2 100mm, which borders Zhaotong, Yunnan, Yibin and Leshan in Sichuan in the east and Ganzi Prefecture in the west. The terrain is high in the northwest, low in the southeast and high in the north and low in the south; The climate belongs to subtropical monsoon climate. Liangshan Prefecture covers a total area of 60,400 square kilometers and governs two county-level cities, 14 counties and 1 autonomous county. By the end of 20021,the resident population of Liangshan Yi Autonomous Prefecture was 4.874 million.