Office1: Room 3803,Xiwang Tower, Shibei District, Qingdao, Shandong，China

Office2: Betreft Harlingerstraat73, 1704 BT Heerhugowaard,Netherlands

Office3: 2105A, Ganfeng Technology Building, Longgang District, Shenzhen, China

Office4: Unit A, Bldg E,Hua Yuan, Tianjin, China

Factory:A3, No.31, Funing Road, Xiqing District, Tianjin, China