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In the current market, the lid of an adjustable pressure cooker has a complex structure, making it difficult to clean after usage. In order to solve this problem, Debo Bull Pressure Cook redesigns the structure of a pressure cooker lid by forming a pressure control system with a built-in spring and a lid handle, implementing a function of pressure adjustment in the pot. The lid of Debo Bull Pressure Cooker does not have air holes. Instead, a mouth-shaped rubber gasket is used to balance venting pressure. When the pressure is high in the pot, the lid would be pushed up and the air is let out through a mouth-shaped rubber gasket.