Summary of Fire Protection System Planning for Large Shopping Centers: Stairs should be able to completely isolate smoke and fire. Any building should have at least one direct staircase (including ramps) on each floor outside the refuge level to access the refuge level or ground level of the large shopping center's fire protection system planning. The specific indicators listed in the data have been verified with Chinese standards, but we do not promise that there will be no errors. Before quoting, members must carefully verify according to local standards or regulations to prevent any deviation. Please strictly follow the Chinese standard GB to formulate and implement accurate indicators and related data.