Which line of Shanghai subway has the best welfare treatment?

Shanghai Metro 1, 5, 9 and 10 enjoy good welfare. Shanghai Metro 1, 5, 9 and 10 lines are operated and managed by Shanghai Metro First Operation Co., Ltd., which is the backbone enterprise of Shanghai rail transit operation and management, with an annual pre-tax income of 65,438+10,000/year. (It may fluctuate according to the company's performance). 20% off probation salary. Slightly higher than other lines.