Address: Building 35, Liandong U Gu, No. 780 Baoyuan Road, High tech Zone, Qingdao, Shandong Operator: 400-036-7077 Email: service@hantek.com Tel.: 0532-556787770, 55678772, 55678773 Postal code: 266000 Official website: www.hantek.com Qingdao Hantek Electronics Co., Ltd