Commercial steel structure is a kind of prefabricated steel construction tailored for business and commercial scenarios. It adopts standardized steel frame design with neat appearance, flexible space division and superior load-bearing performance. It is ideal for commercial malls, office buildings, retail stores, supermarket buildings, exhibition halls and commercial service centers. Featuring modern architectural style, easy interior decoration, good fire insulation and sound insulation effect, it allows flexible expansion and later reconstruction. Meanwhile, it occupies less construction area, shortens project cycle, lowers comprehensive investment cost and perfectly meets the diversified layout and long-term operation demands of commercial projects.