It’s all made of fine stainless-steel material & by advanced technology.
The internal-immersing electric-heating tube makes very high heating effects.
The concave bottom not only maked the apparatus laid stably, but also avoid flame going uo around it when heated by coal stove or wood-fire.
In the process of sterilizing, pressure is controlled bu the safety valve, so very safe and reliable.
The preuure-meter on the lid displays the pressure and temperature when then apparatus is working