... 1)Pressure cooker:Aluminium or S/S body &cover,polished surface 2)Quick& heat transmission 3Multi-safety devic 4)easy to use Pressure cooker Descriptions ... cooker3) The silicon sealing ring, without poison or odor, sealing well, easy to open and close the lid4) Multi-safety devices ... pressure cooker6) Pressure cooker: all size 3L,4L,5L,7L,9L,11L,13L ,15L ,18L,20L for you to choose.7) Induction pressure ...