... body, 1.0mm body, 1.2mm lid,sandwich bottom 1, stainless steel low pressure cooker have 4 safety set, open -close ... ring more safely and durable.6, imported high-quality 18-8 stainless steel and aluminium reunite the bottom, imported high-quaality 18 ... .7, three layers reunite and bottom, suit to electromagnetic stove. stainless steel low pressure cookers