prefabricated steel structure 1. large span, ... If Applicable5) Doors and Windows 6) Crane (if have), Crane span, crane lift height, max lift capacity, max ... Window Alu. Alloy (can use with skylight) Usage Warehouse, workshop, shopping mall, exhibition, supper market Standard and ... Window Alu. Alloy (can use with skylight) Usage Warehouse, workshop, shopping mall, exhibition hall, supper market Standard ...