What do heavy truck workers do in Dangjiazhuang, Jinan, Shandong Province?

It is very difficult for heavy truck workers in Dangjiazhuang, Jinan, Shandong Province. Jinan Heavy Duty Truck works overtime every day, and there is no rest time when it is nervous. Novice workers who have just gone need a period of skilled processes, because each workshop of China Heavy Duty Truck has different processing processes, which requires new workers to be familiar with their own workshops first.