I want to buy a hearing aid for the elderly in my family, may I ask which one is better in Nanjing?

Nanjing Ruikang Hearing Rehabilitation Co., Ltd. 202, No. 30, Huo Wa Lane, Baixia District, Nanjing Nanjing Stantec Hearing Aid Service Department, No. 21, Jiefang Road, Baixia District, Nanjing Nanjing Lin Ying Lixing Hearing Aid Center, No. 442, Mochou Road, Baixia District, Nanjing Siemens Hearing Aid Testing and Dispensing Center, No. 3, Xinhua Yicun, Dafang, Nanjing, Nanjing Lixingtang Audiological Rehabilitation Co. No.73-5 Danfeng Street, Gulou District, Nanjing (Xuanwu) Siemens Hearing Aid Testing and Dispensing Center, No.75-2 Danfeng Street, Nanjing (100 meters north of Jinrunfa, at the Danfeng Street Station) Nanjing Lichongtang Audiological Rehabilitation Center, Nanjing Danfeng Street Store, No.73-5 Danfeng Street, Gulou District, Nanjing Desheng Hearing Hearing Aid Service Department, No.140 Hanzhong Road, Gulou District, Nanjing Branch Office, No.262 Zhongshan Road, Gulou District, Nanjing, China No.262, Zhongshan North Road, Gulou District, Nanjing, Nanjing Huicong Hearing Technology and Equipment Company Limited, Block F, 5th Floor, Yifa Information Building, No.179, Zhongshan Road, Gulou District, Nanjing, Nanjing, Nanjing, Desing Hearing Hearing Aid Service Department, No.236, Zhongzhong Road, Gulou District, Nanjing, Nanjing, Nanjing, Nanjing, Ruizhi Hearing Aid Technology and Service Center, No. 104, No.321, Zhongzhong Road, Gulou District, Nanjing, China Nanjing Hai Zhi Sheng Technology Development Co., Ltd. 215 Guangzhou Road, Nanjing Siemens Hearing Aid Fitting Center No. 139 Hanzhong Road, Nanjing Five Star Nianhua 2101 Stantec Hearing Aid Nanjing Fitting Center No. 140 Hanzhong Road, Nanjing ( next to Nanjing Medical University) Siemens Hearing Aid Fitting Center No. 159 Hanzhong Road, Nanjing ( next to the Yifeng Pharmacy, 30 meters west of Provincial Hospital of Traditional Chinese Medicine) Nanjing Huicong Hearing Technology and Equipment Co. No. 102, Tushan Road, Jiangning District, Nanjing Stantec Hearing Aid Nanjing Fitting Center, No. 21, Jiefang Road, Nanjing Linying Lixing Jixing Road Hearing Aid Center, No. 131, Jixing Road, Qinhuai District, Nanjing Yueyin Hearing Technology Co. No. 250, Longbang Road, Xuanwu District, Nanjing Tianlai Hearing Instrument Business Department No. 72, Longbang Middle Road, Xuanwu District, Nanjing Kanger Hearing Center Limited Liability Company No. 5, Shuanglong Lane, Xuanwu District, Nanjing (small second floor) Nanjing Hearing Aid Service Center, No. 110, Pieting Lane, Taiping North Road, Xuanwu District, Nanjing Yueyin Hearing Technology Company Limited No. 518 Zhonghua Road, Nanjing Siemens Hearing Aid Testing and Dispensing Center No. 144, Zhonghua Road, Nanjing (opposite to the Provincial Foreign Transportation Building, Aqua City, Sanshan Street) Lichongtang Nanjing Zhonghua Road Store No. 148, Zhonghua Road, Nanjing Oticon Hearing Aid Service Center No. 272-1, Zhonghua Road, Nanjing Nanjing Dikang Electronics Co. No. 321, Central Road, Nanjing -15 Stantec Hearing Aid Nanjing Fitting Center, No. 236, Central Road, Nanjing Siemens Hearing Aid Fitting Center, No. 264, Central Road, Nanjing (opposite to NAC at Xufu Lane Station) Oticon Hearing Aid Fitting Center, No. 321, Central Road, Nanjing -104 Nanjing Zhongye Science and Trade Co. Room Siemens Hearing Aid Fitting Center No. 301 Zhongshan East Road, Nanjing (20 meters west of the General Hospital of the Military Region)