The 4" dim sum steamer papers box contains 10,000 sheets of steaming paper. The dim sum steaming paper is made of natural wood pulp. It is FDA approved, non-stick, recyclable,  and is strong enough for greasy or oily food. The 4 inch dim sum steamer papers could be frozen, and used in high heat. Our dim sum and dumplings steam papers are commonly used with Bamboo Steamers and other commercial steamers in restaurants. Perfect to steam dim sum, dumplings, and other food items. Made in China.