I want to buy a hearing aid for the elderly at home. Which one is better in Nanjing?

Room 202, No.30 Huowa Lane, baixia district, Nanjing baixia district Stark Hearing Aid Service Department No.2 Jiefang Road, baixia district, Nanjing 1 Nanjing Linying Li Sheng Hearing Aid Center No.442 Mochou Road, baixia district Nanjing Siemens Hearing Aid Fitting Center No.3 Building, Xinhua Village, Nanjing Dachang 105 Room Nanjing Licongtang Hearing Rehabilitation Co., Ltd. No.73-5 Feng Dan Street, Nanjing Listen to Nanjing (Jin Run Fabei1 00 meters away from Feng Dan Street Station) Nanjing Licongtang Hearing Rehabilitation Center Nanjing Feng Dan Street Store Desheng Listening Hanzhong Road Hearing Aid Service Department Nanjing Gulou District Hanzhong Road 1 No.40 Nanjing Licongtang Hearing Rehabilitation Co., Ltd., No.262 Zhongshan North Road, Gulou District, Nanjing Huicong Hearing Technology Equipment Co., Ltd. Nanjing Desheng Hearing Aids Service Department, Block F, No.236 Central Road, Gulou District, Nanjing Ruiting Hearing Aids Technical Service Center, Room 32 1 Gulou District Central Road, Nanjing Licongtang Hearing Rehabilitation Center, Nanjing Guangzhou Road Store, 215-/kloc Limited company Siemens hearing aid fitting center No.2 1 5 Guangzhou Road, Nanjing Hanzhong Road 139 Nanjing Wuxing Nianhua 21kloc-0/Stark hearing aid fitting center Nanjing Hanzhong Road 140 (next to Nanjing Medical University) Siemens hearing aid fitting center Nanjing Hanzhong Road1 No.59 (next to Yifeng Pharmacy, 30m west of Provincial Hospital of Traditional Chinese Medicine) Nanjing Huicong Listening Technology Co., Ltd. Audi Kang Hearing Aids Fitting Center, No.5 Zhonghua Road, Qinhuai District, Nanjing No.35-5 Taiping North Road, Nanjing Baozhicong Hearing Aids Sales Center, No.250 Longpan Road, Xuanwu District, Nanjing Teana Hearing Equipment Business Department, No.72 Longpan Middle Road, Xuanwu District, Nanjing Kanger Hearing Center Co., Ltd., No.5 Shuanglong Lane, Xuanwu District, Nanjing (second floor) Nanjing Lingyutang Hearing Aid Service Center, Taiping North Road, Xuanwu District, Nanjing 60 Co., Ltd. Siemens Hearing Aid Fitting Center, No.518, Nanjing Zhonghua Road 144 (opposite to Shuiyou City, Sinotrans Building, Sanshan Street) Li Congtang Nanjing Zhonghua Road Store, No.272-65433, Audi Kang Hearing Aid Fitting Center, Nanjing Zhonghua Road, Limited companies: Youlikang Hearing Aid Fitting Center of New Age Building, No.402 Zhongshan East Road, Nanjing; Nanjing Ruiting Hearing Aid Technical Service Center, No.518-2 Zhongshan East Road; Nanjing Hearing Aid Fitting Center, No.3215 Stark Hearing Aid; Siemens Hearing Aid Fitting Center, No.236 Nanjing Middle Road; No.264 Nanjing Middle Road (opposite to the seventh south of Xufu Lane Station). New Nanjing Zhongye Trading Co., Ltd. Building B, New World Center, No.88 Zhujiang Road, Nanjing/Room 32 1 01Siemens Hearing Aids Fitting Center No.301Zhongshan East Road, Nanjing (20 meters west of Military General Hospital)