Light wave barbecue, slow; Microwave heating, quick. At the same time, the inverter microwave oven is cheaper. In terms of price, frequency conversion microwave oven is more expensive than non-frequency conversion microwave oven.

Microwave heating generates "internal friction heat" through the high-frequency reciprocating motion of dipole molecules in the heated object, thus increasing the temperature of the heated object. Without any heat conduction process, the material is heated inside and outside at the same time, and the heating speed is fast and uniform.