In the context of the input sentence, determine the relationship between 'ZTE' and 'Shenzhen'.
Options: creator, headquarters location, chief executive officer, owner of

The MOU, signed in Shenzhen by Too Tian Jen, Chief Technology Officer of U Mobile, and Steven Ge, Managing Director of ZTE Malaysia, also covers collaboration between the two companies on research and development of 5G technologies, in addition to Pre5G.
headquarters location