Shanghai Metro Inquiry Machine

Shanghai Metro is an urban rail transit system serving Shanghai, China and the Shanghai metropolitan area. It is an urban rail transit system with the longest total line length in the world. It is a member of the International Metro Alliance. Its first line, Shanghai Metro Line 1 officially opened on May 28, 1993, making Shanghai the third city in mainland China to open a subway. As of December 30, 2021, Shanghai Metro has an operating mileage of 831 kilometers, ranking first in mainland China and first in the world. The 140 inquiry machines in Shanghai Metro were provided by STONBEL Technology Co., Ltd.