What is the relationship between Haier and Qingdao in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Qingdao Haier Co., also a subsidiary of Haier Group, is listed on the Shanghai Stock Exchange (SHA: 600690) and focuses on driving innovation in smart home technologies.

Answer: headquarters_location