The present model GQ640 travel bus was rebruilt from the fourth sort of the Aeolus model EQ140 truck chassis.

• 现有GQ640大客车是在东风EQ140载重车四类底盘基础上改装而成的；其悬架刚度和轮胎刚度都较大；因此其平顺性和行驶安全性都不完善.