BOIN Hearing Technology (Shanghai) Co., Ltd
Service hotline: 400 8200 658 (Only in China)
Customer hotline: (86)21-6477 0588
Address: Room 401, 402, 403, 405, Building 4, No.2899, Lian Hua South Road, Minhang District, Shanghai City, China
Website: www.boinhering.com