H?i ??ng x? s? ki?n thi?t mi?n B?c bao g?m 28 ??n v? thành viên, trong ?ó có 6 ??n v? t? ch?c quay s? chính th?c và c? ??nh hàng tu?n c? th? nh? sau:Other things, like line outages and sags or even the setting up and stopping of the motor, also can cause intermittent activities causing tools shutdowns. When these activities take place, you m