Eight hundred Chinese buses departed Hefei, capital of East China's Anhui province, on Tuesday morning, heading to Saudi Arabia.

The buses, made by Anhui Ankai Automobile Co, have a combined contact value of about 400 million yuan ($63.6 million).

The deal, contracted in February, is said to be the biggest export order of buses won by a Chinese automaker so far in 2018.

Ankai entered Saudi Arabia in 2007. The company exported 3,000 school buses and 600 A9 model high-end buses to the country in 2011 and 2017, respectively.