Haitian Avenue Tunnel, Zhejiang

The Haitian Avenue in Zhoushan, which is the most important arterial road in this city.

Olympic Tunnel, Xi'an

Sansi provided comprehensive solutions such as LED tunnel lighting systems for the Xi'an Olympic Tunnel

Yanjiang Road Tunnel, Shanghai

As the first super-large diameter tunnel which continuously cross the Yangtze River and Huangpu River, the Yanjiang Tunnel plays an essential role in facilitating the trip back and forth.

Beiheng Tunnel, Shanghai

Sansi's latest tunnel lighting technology applied in Shanghai North Cross Passage(The Beiheng Expressway) was officially opened in 2021

Zhaxiao Tunnel, Shaanxi

The Zhaxiao tunnel in Shaanxi province adopts Sansi's newest reflective tunnel lighting technology.

Qianhai Tunnel

Shenzhen Qianhai Underpass realizes the conversion of underground and surface transportation by constructing several entrances and exits, providing convenient transportation conditions for the area.

Yellow River Tunnel, Jinan

As the first, which is also the largest-diameter sheild tunnel across the Yellow River, the Jiluo Road Yellow River Tunnel was officially opened to traffic after years of construction.

Hong Kong-Zhuhai-Macao Bridge Tunnel

The Hong Kong-Zhuhai-Macao Bridge is not only the longest cross-sea bridge in the world, the 6.7 kilometer undersea tunnel part is also the world's deepest buried and most technically difficult immersed tunnel.

329 National Way

SANSI tunnel lights light up 329 National Highway. Stretching 10km, Dadongdai tunnel is the longest tunnel in Zhoushan.