Significant features: safe, fast heating, able to withstand high loads, long service life of frying machine, good vibration and impact resistance, good moisture resistance of terminal part, high temperature resistance, easy loading and unloading, no need to occupy additional design space; Attention: When using the fully automatic frying machine, it should be installed horizontally with the liquid level at least 10mm above the tube surface to prevent heating in the air (air burning), which may cause the electric heating tube to overheat and lead to premature disconnection; Long term use, periodically clean the scale, carbonization, and accumulated substances on the surface of the electric heating tube to prevent internal heat accumulation and corrosion of the tube surface; Select appropriate shell materials according to different heating media to ensure service life.