How many shifts is the signal repairman of Ningbo Metro?

double shift system. According to the recruitment information of Ningbo subway signal repairman, the repairman is in two shifts. Ningbo is a prefecture-level city under the jurisdiction of Zhejiang Province, a sub-provincial city, a city with separate plans, a type I metropolis, an important city in Shanghai metropolitan area, an important port city in the southeast coast of China and an economic center in the south wing of the Yangtze River Delta approved by the State Council.