... we are ready for embracing a new future Composite board of the specifications of the:thickness: color plate thickness(mm)0.3-0.8 ... 1200,1150,1000,950,1130 roof board: 950,980 characteristics of the color composite sandwich plate :high strength,physical . corrosion resistance ... two bands through the eye of coil (or not) and one circumferential, the contact points of these bands on the coil edge to ...