... as windows, doors, cranes etc.Light steel structure is widely used in warehouses, workshops, large factories ... than 50 years.(5).Other characteristics: environmental protection, stable structure, earthquake resistance, water proofing, and energy saving3. ... Street,Weifang city,Shandong,ChinaEmployee360R&D Staff26Main ProductSteel Structure,Space Frame,Prefabricated House,Steel Tower etcEquipmentCNC ...