Jiuquan Waterworks Office Building

This remote 8,000-square-metre office-building heating project in Jiuquan, Gansu has no municipal heating and uses radiators indoors. An SJK-80G/IIBF Sujing ultra-low-temperature variable-frequency cascade unit provides 70 C rated supply water, up to 80 C maximum, maintaining indoor winter temperatures above 20 C.