ShenZhen Yinghuiyuan Electronics Co.,Ltd , https://www.yhypoweradapter.comAccording to specific conditions and needs, the exposed conductive part and the external conductive part of the device are connected to each other within a partial range of the electrical part of the building, so that the potential difference under the fault condition in the local range is further reduced, even less than the contact voltage limit. . For example, a local equipotential bonding is made in the bathroom or a partial area of ​​a floor.