Haizhizhi national hearing chain has been engaged in scientific fitting for more than 20 years, and there are more than 100 national fitting centers. At present, there are four Xi 'an hearing AIDS, namely: Xi 'an Hai Zhi Zhi Hearing Aids Flagship Center (located in Building 2 of Anding Plaza in Ximenli), Xi 'an Hai Zhi Hearing Aids South Street Center (located at the intersection of Dongmutou City and the 4th floor of Century Jinhua) and Xi 'an Hai Zhi Hearing Aids Xingqing Road Center (located at 65433 south of the west exit of the umbrella tower).