Big and Small Pot Cover / Pot Cover

Big and small pot cover is a new type of two layers pot cover, which is composed of pot covers having different sizes with two laps inside and outside. When releasing the steam, you could open a small pot cover clockwise. When needing to overall open the pot covers, you could fix the small pot cover on the big pot cover counterclockwise, overall open. The operation is easy and the safety is high, which could satisfy many kinds of needs during using the stew pan.