On February 10, 2026, the western extension of Chongqing Metro Line 4, constructed in part by Shenzhen Keanda Electronic Technology Co., Ltd. (stock code: 002972), was opened to traffic. As a leading domestic professional solution provider in the field of rail transit signal control and operation and maintenance protection, Keanda leveraged its extensive industry experience and professional technical capabilities to provide axle counting systems and lightning protection distribution cabinets for the project's implementation and opening, ensuring its smooth implementation and safe operation, and providing a more convenient, safe, and intelligent travel experience for the general public!
The western extension of Chongqing Metro Line 4 is 11 kilometers long, connecting to the Min'an Avenue Station of Phase I of Line 4 and ending at Shunshui Temple Park Station. It has a total of 9 stations, of which 8 are open for operation this time: Jiaozhou Road Station, Longxi Station, Huahuiyuan Station, Daqingcun Station, Dashiba Station, Panxi Station, Yudaishan Station, and Shimahe Interchange Station. The opening of .

Keanda has assisted in the opening of over 200 urban rail transit lines, each a testament to the company's technology and strength. The rapid development of rail transit places extremely high demands on project safety, product quality, and after-sales service. Keanda consistently prioritizes quality, working hand-in-hand with industry clients and partners to further accelerate forward-looking research and innovation, developing safer and higher-quality products to continuously support the high-quality construction and development of rail transit nationwide. Adhering to the Belt and Road Initiative and the 'Going Global' development strategy, Keanda will also strive for breakthroughs in high-end, intelligent, green, and global transformation and upgrading, providing continuously innovative products and services for smart operation and construction of rail transit. Adding to the contribution of smart city construction!