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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.

State Grid Tai'an 220kV Tianping Substation ZMJ100PRH density micro water integrated online monitoring upgrade.

ZMJ100PRH type micro water density integrated online monitoring for 110kV substation of PetroChina Jingtang Liquefied Natural Gas Co., Ltd.