The visual in contrast of orange and pure white can be seen everywhere in the construction machinery factory project, echoing the original color of the gantry crane. The exterior wall, its surface is made of high strength anti-corrosion steel, which conforms to the history with its rust texture and the mark of the factory are retained as symbols of cultural memory. The facade of large office building is paved with aluminum alloy perforated plate sunshade louvers, the modern light hole makes the facade enjoy rich changes in different periods of sunshine.