Material: Aluminum Name:pressure cooker Size:18cm,20cm,22cm,24cm,26cm,28cm ----Material:Aluminum----Size:18cm,20cm,22cm,24cm,26cm,28cm---- Automatic and multiple safety devices: alarm valve, safety valve, gas window, pressure-control valve, blocking reducing device, and automatic locking valve---- Lower handle, protected by fire-protection ring, to prevent lower handle being hurt and loose---- ...