Dalian Hi-tech Zone (Chinese: 大连高新技术产业园区 or 大连高新区) or DHZ (variant officially used spellings include Dalian High-tech Zone) is an industrial district in the western suburbs of Dalian, Liaoning, China. It extends about 30 kilometres along Lüshun South Road and Guoshui Highway in Shahekou District and Lüshunkou District, where many of the world's multinational technology companies have operations.