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. SANSI is honored to participate in this project which can be described as a miracle of the world. Our C0810-XC tunnel lights ensure the road safety in this long, airtight undersea space.