... Tray Advantage & Feature1) 100% Biodegradable,Compostable Paper Tray for Tools2) Nontoxic,Harmless,Healthy and Sanitary3) Sturdy &Strong,Protective ... ,Lightweight Plate for Hardware,Metal Tools4) Water-proof,Oil-resisting Impervious,Crease ... boxes, soap bowls and dishes,which are suitable for microwave ovens. They are widely used at fast food factories ...