Passed ISO 14855 (Biodegradable rate reaches 91.07% within 102 days)Meet International Environment Protection StandardsPassed National Hygiene TestsMeet & Exceed FDA required standardBiodegradable Compostable Disposable Eco-friendlyMade from corn starch materialCan be used in microwave ovenWithstand temperature rang from -20 to 120 degree CelsiusNonabsorblent of water, oils, or smellsNontoxic, hygienic, durable, and sturdy