50mm thick insulation color steel sandwich board with J * B42-333 * 1000 What does this mean?
It may be said that the sandwich board wave height 42 wave width 333 width 1000 bar Oh country mark should not be so that the specification model
42 for the high corrugated slope, 333 for the distance between the center of the slope, 1000 for the practical area, this sandwich panel is not common
