Group 1 - The State Intellectual Property Office of China has granted a patent to Changgao Electric New Technology Co., Ltd. and Hunan Changgao High Voltage Switch Co., Ltd. for a device titled "A Directly Inserted Ground Switch Contact with Buffering and Guiding Functions" with the authorization announcement number CN 110890233 B, applied for on November 2019 [1] - Changgao Electric New Technology Co., Ltd. was established in 1998 and is located in Changsha City, primarily engaged in technology promotion and application services, with a registered capital of 620.332085 million RMB [1] - The company has invested in 25 enterprises, participated in 339 bidding projects, holds 30 trademark registrations, and has 365 patent registrations, along with 32 administrative licenses [1]