... or V or other type bracing made from angle, round pipe, etc6) C or z purlin: Size from C120~C320, Z100 ... thick, YX28-205-820(820mm wide),Sandwich panel with EPS, ROCK WOOL, PU etc insulation thickness around 50mm~150mm, width 950mm or ... 960mm!8)Accessories: Semi-transparent skylight belts, Ventilators, down pipe, outer gutter, etc9)Surfrace: Paint or hot dip galvanize!10 ...