... ,sandwich panel, welded H steel,C/Z channel,corrugated steel sheet,etc. Steel structure design rules: "Steel Design Code" ( ... steel beams & column, purline, bracing wall& roof: single steel sheet, EPS sandwich panel, glass wool/rock wool sandwich panel, PU ... glass fix/sliding window Door: Auto-rolling up door/ sandwhich sliding big door/ small sandwich man door/ PVC small door Design shape:round roof ...