Mawei Base, Fujian Provincial Product Quality Inspection Research Institute

Mawei Base, Fujian Provincial Product Quality Inspection Research Institute

Xi'an High Voltage Apparatus Research Institute

Xi'an High Voltage Apparatus Research Institute

Guangdong Power Grid Company

Guangdong Power Grid Company

Hunan Electrical Appliance Research Institute Co., Ltd.

Hunan Electrical Appliance Research Institute Co., Ltd.

Yunnan Power Grid Diqing Power Supply Bureau 220kV Weixi Substation

Yunnan Power Grid Diqing Power Supply Bureau 220kV Weixi Substation

Huzhong Power Grid Company, Yaoa 500kV substation

Huzhong Power Grid Company, Yaoa 500kV substation

State Grid Qinghai Electric Power Company Material Quality Inspection Center

State Grid Qinghai Electric Power Company Material Quality Inspection Center

Southern Power Grid 500kV Funing Converter Station

Southern Power Grid 500kV Funing Converter Station

Guangdong Power Grid Dongguan Power Supply Bureau Testing Institute

Guangdong Power Grid Dongguan Power Supply Bureau Testing Institute

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