1.Tempered glass panel & aluminum frame , anti-scratch ,solid durable ;easy to write and wipe off .direct manufacturer . Detail:LED writing board 1.Tempered glass panel & aluminum frame , anti-scratch ,solid durable .2.easy to write and wipe off ,very user-friendly .3.engry-saving, power consumption of one month of continuous light only about 2 degree4.Advertising for resturant, pub,club, ...