State Grid Corporation of China Shandong Jiaxiang 110kV Tuanli Substation

State Grid Corporation of China's Shandong Jiaxiang 110kV Tuanli Substation, Qufu 110kV Xixi Substation, GIS equipment mixed gas replacement upgrade and renovation, and has successively provided mixed gas density relays to domestic Taikai, New Northeast, Pinggao and other switch factories for use in State Grid pilot projects.