... reinforcement 2,material,Thickness: 25mm-30mm Smooth surface Honeycomb Sandwich board1: High strength, light green environmental protection, the ... sides of materials(such as wood plate, aluminum, stainless steel plate, Dali, plate etc) composite2:Customers can use ... honeycomb panel is used in chemical barrier to provide protection for tanks, pits, pipes and grates honeycomb Sandwich board/ panel