... you don't have any ideal about what/how to do for your warehouse/workshop,or this ... as below: (1) Simple steel structure warehouse Main structureSingle span shorter than 18m,lower than 6m ... door(within 15m2) Window Alu.alloy(can with skylight) Usage Warehouse,workshop,shopping mall,exhibition, ... quotation (5)Steel structure warehouse with crane(5T,10T,20T) Main structureSingle span shorter than 20m,lower ...