Refer to the input text as context and select the correct relationship between 'Shanghai Electric' and 'Shanghai' from the available options.
Options: founded by, distributed by, stock exchange, headquarters location

Khartoum — The Sudanese Electricity Transmission Company signed an agreement with the Shanghai Electric Group Company in Shanghai in China on Thursday, for the linking of the Babanusa-Adila power line to the national electricity grid.
headquarters location