The Hong Kong-Zhuhai-Macao Bridge is a Bridge and tunnel project in China linking the cities of Hong Kong, Zhuhai and Macao in Guangdong province.The 55-kilometer Hong kong-Zhuhai-Macao bridge is the world's longest sea-crossing bridge and one of the most technologically complex, demanding and standardized construction projects in China's transportation history. The Hong Kong-Zhuhai-Macao bridge is known around the world for its huge construction scale, unprecedented construction difficulty and top-notch construction technology. This bridge won The Luban Prize for Construction Project in 2019.It was named the "seven wonders of the new world" by the Guardian.MM series compact busway is honor to be one part of distribution system of Hong Kong-Zhuhai-Macao Bridge.To be the witness of the chinese transportation history.