inner liner: double inner liner, the inner layer is made of embossed aluminum plate, the outer layer is made of high-quality stainless steel plate, the U hole is punched in stainless steel, the hole density is 45 holes /mP, and the copper tube is exposed. 

control part: microcomputer temperature controller (automatic, manual), with high temperature measurement accuracy, wide temperature control range, digital display intuitive advantages.

The sensor fault alarm system: when the temperature probe short circuit, open circuit fault, the controller to start the alarm mode, buzzer sounded, don't press any key to continue until alarm troubleshooting.