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.
Take context from the input text and decide on the accurate relationship between 'ZTE' and 'Shenzhen' from the options provided.
Options: headquarters location, owner of, chief executive officer, creator