Paper pulp tray： Nontoxic ,harmless, healthy and sanitary. 100 ℃ water resistant and 120 ℃ oil resistant, no leakage within two hours. Fits to use for roasting in microwave oven and freezing in refrigerator. Can be recycled, 100% biodegradable and eco-friendly. Variety of sizes available. Brand Differentiating Look and Feel, Consistent Fiber Quality.