GIS has a strong development momentum, forming a production hotspot. State-owned enterprises, joint ventures and private enterprises are all on the scene. At present, many enterprises have produced GIG. According to incomplete statistics, There are Xi 'an Cathy High Voltage Electric Co., Ltd., Gao Ping Group, Shanghai Huatong Kai Guanchang Co., Ltd., Xi 'an High Voltage Electric Research Institute Electric Factory, Taikai Group Co., Ltd., Zheng Tai Electric Co., Ltd., Shanghai Xi 'an High Voltage Electric Research Institute Co., Ltd., Rujia High Voltage Electric Co., Ltd., Gao Ping Toshiba High Voltage Switch Co., Ltd., Shanghai Siemens High Voltage Switch Co., Ltd., Jardine Electric Group Co., Ltd., Shanghai Pingkai Huaming High Voltage Switch Co., Ltd., Beijing Huadong Electric Co., Ltd., Xiamen ABB Huadian High Voltage Switch Co., Ltd., Shandong Luneng Siyi Pawa Motor Co., Ltd., Weiao Power Transmission and Distribution (Guangzhou) Co., Ltd., Jiangsu Hyundai Nanzi Electric Co., Ltd., Taishan Hengxin Switch Group, Hubei Yongding Switch Co., Ltd., Areva Group, Tianshui Great Wall Kai Guanchang, etc. (282 words left)