久久系列中文字幕,曰韩国产精品久久久久久,999国产精品免费,日本少妇高潮久久久久

The coil generates magnetic field when the current passes. Generally fan is a magnetic field in which two opposite coils produce two opposite forces, thus generating the operation of the fan. While our breeze ceiling fan is a magnetic field generated by only one coil, and the other magnetic field is generated by permanent magnet, In this way, the running of the fan just using half energy.