Bakeware, Tableware, Drinkware and Cookware Design Plane And Concave Water Storage Tea Tray by Chenghua pan The tea tray is composed of natural black stone plate and metal (made of aluminum) water storage chassis, the thickness of disk surface is only 1.6cm. The planesurface part highlights strength and the concave highlights soft,In terms of use, the plane is the "dry" area and the concave is the "wet" area, which skillfully realizes the dry and wet separation. At the same time, the horizontal position of the concave surface is just 3/4 of the height of the metal water tray. so you can intuitively see the tea can be spilling from the drainage hole, reminding the user to dump the tea.