1. Will there be a small amount of smoke and unpleasant smell when heated for the first time. This is because the heating plate is a cast iron plate, and a layer of anti-rust protective film needs to be added during the production process. The protective film will cause smoke and odor when it is used for the first time. After evaporation, there will be no more smell and smoke. When using it for the first time, let it ventilate and burn it for 10-20 minutes to evaporate the protective film.<br> 2. Regarding the reason why the power light goes out during use, the electric heating furnace has a temperature control switch, so the power light will go out during use. When the light is turned off, it enters the constant temperature state. If the temperature is lower than the set temperature of gears 1-5, the power light will turn off again. It will light up again to maintain the furnace surface temperature. Thermostatic furnaces all use this working principle. Therefore, when buyers use it, they will often see the power light on and off, and always maintain a constant temperature.<br> 3. During the heating process of the electric furnace, the furnace body is also hot. The working principle of the electric furnace is that the heating tube generates heat. It is different from the magnetic heating of the induction cooker. The electric heating furnace dissipates heat. Even if nothing is placed on the surface of the electric furnace, it will not affect the electric furnace.<br> 4. The work is not affected by anything, just like a stove or a kettle heated by a fire, there will be heat around it, so the electric stove can heat the glass container.<br> Please do not touch the furnace body with your hands during use.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin