Manufacturers of electrical switches refer to those.

Large-scale high, medium and low-voltage cabinets can be produced by panel factories, also known as complete sets of electrical appliances factories or electrical cabinets factories, while small-scale cabinets can only be used as low-voltage cabinets or power boxes;

Domestic well-known disc factories: Schneider Xiamen, ABB Xiamen, Siemens, Zheng Tai, Delixi, Shanghai Zhezhong, Wuxi Boer, Jiangsu Daquan, etc.