Shanxi Dayun Automobile Manufacturing Co., Ltd, known as Dayun Motor, is a heavy truck manufacturer located in Yuncheng, Shanxi, China.

Chengdu Dayun Automotive Group Co. Ltd., commonly known as Dayun Light Truck, is a light truck manufacturer based in Chengdu, Sichuan, China, and a division of Dayun Group.

Light trucks are manufactured under the Dayun brand.

Yuanhang (远航) means ‘Voyage’ in Chinese.

Yuanhang Auto is a premium brand under the Dayun Group, based in Yuncheng, Shanxi Province.