... ,1.2mm lid. sandwich bottom 1,stainless steel low pressure cookers have 4 safety set, pressure liminting-valve, safety window, safety indicator ... easy to clean. 4, pressure-limiting valve,setting pressure accutately and safely,even upon the limited pressure. 5, high security's ... safely and durable. 7, imported high-quality 18-8stainless steel and alloy aluminum reunite the bottom, imported high-quality ...