... steel rolling shutter (within 10m2) Window Very few Usage Warehouse, workshop Standard and suitable market Africa, Middle-East, ... 2) Standard Steel Structure Warehouse Main structureSingle span shorter than 24m,lower than 8m Maintenance system Roof Colored steel sheet ... 15m2) Window Alu. Alloy (can use with skylight) Usage Warehouse, workshop, shopping mall, exhibition hall, super market Standard and ...