I also sell microwave ovens in the electronics store. The barbecue tube adopts quartz tube (that is, the bright small solar tube used by the company) or halogen tube (light wave tube), which can generate high temperature and heat quickly, and the cooling speed is also fast, the heating efficiency is relatively high, and it will not burn, thus ensuring the color of food. In terms of cost, the cost of light wave tube is only a few dollars more than that of copper tube or quartz tube, so it is very common to use light wave tube in microwave oven technology now.

I didn't buy a lightwave oven in 700 yuan before I went to work in an electrical appliance store (I regret that it was not as good as 300 yuan). This function has only been used a few times. Now that the microwave function is broken, the light wave function can still be used, but the temperature rises slowly. I took it apart and saw that there were only two lightwave tubes, which cost ten yuan, plus two iron plates and wires, which were 200 to 300 yuan more expensive than microwave ovens. It's worthless at all. The simpler the function, the better.

Of course, if the budget is around 800 yuan, you can buy a microwave oven, but most people don't need it ... they can't find the barbecue grill that was given at that time. I asked many housewives around me and said that it doesn't use light wave function.