Shanghai Guanyi Electronic Technology Co., Ltd. (referred to as Guanyi Electronics)
Service Hotline:400-086-7266;
Contact Phone:0086-021-61204058;
URL:https://www.mmimmu.com;https://www.guanyee.net;
Email:eric@guanyee.net; mimmu@mmimmu.com;
Address:Room 401, Building 8, R&D Building, Caohejing High-tech Park, No.518, Xinzhuan Road, Shanghai