H?i ??ng x? s? ki?n thi?t mi?n B?c bao g?m 28 ??n v? thành viên, trong ?ó có six ??n v? t? ch?c quay s? chính th?c và c? ??nh hàng tu?n c? th? nh? sau:Automatic industrial machinery is more difficult than in the past to troubleshoot. It is not adequate to just know where you have to examination, you even have to really know what to search fo