... .62, WD615.87 engine of China National Heavy Duty Truck Group.ltd.Engine ModelWD615.67 WD615.67 WD615.62 WD615.62 WD615 ... Truck Group Co., Ltd. Weichai Power Co.,Ltd. China National Heavy Duty Truck Group Co., Ltd. Weichai Power Co.,Ltd. China National Heavy Duty Truck Group Co., Ltd ...