Shenyang Metro Line 4 is one of the most important backbone lines in Shenyang subway network, and also one of the four longitudinal lines. Route planning: Wanghua Street Station (Puhe Island) -- Hangkong South Road (Shenyang South Railway Station), with a total length of 37 kilometers, and main roads including G203 National Road, Wendong Street, Beidaying Street, Hezuo Street, United Road, Beizhan Road, Heping North Street, Zhongshan Road, Nanjing North Street, Nanjing South Street Hongchun Road. The specific station position is: Hangkong South Road Station, New Shenyang South Station, Chengjian College Station, Nanjing Street Red Chun Road (Sujiatun District), Shanghe Village station, Wangshitun Station, Changbai South Station, Changbai Island station, Changbai North Station, Shayang Road station, South Five Road station, Taiyuan Street station, Shifu Road station, Huangsi Road station, Shenyang North Station, Shenyang University Station, Beidaiying Street station, South Camen Road station, Guanquan Road station, Wanghuatun Station , labor Road station, Wanghua Street station, including space south Road parking lot is located in Hunnan New District, south of space South Road, west of Harbin passenger special, Harbin bullet train section north of the plot, the parking lot construction area of 42,232 square meters. It is used for parking inspection of 15 lines (including 10 lines reserved in the long term), weekly and monthly inspection of 2 lines, car washing 1 line, engineering garage 2 lines.

　　The application of warehouse, comprehensive building, machine adjustment and engineering garage, for the stop and inspection of subway trains have high requirements for the fire and smoke exhaust system and other supporting plants, and they attach great importance to the related quality and service. The product solutions of Roda Skylight have completely solved the concerns of the technical department, such as water leakage and dew, and Roda skylight system for smoke exhaust is finally recognized for its high quality and professional service.

　　In 2021, Roda Skylight won the bid for the parking lot project of Hanghang South Road, Phase I project of Shenyang Metro Line 4. The skylight area of about 5,000 square meters has been completed.