What about Shanghai East China Telecom Research Institute?

Safe and reliable.

According to Baidu Encyclopedia and Aiqi, Shanghai East China Telecom Research Institute is located on the 7th floor of No.600 Yunjin Road, Xuhui District, Shanghai. Established on September 20 10. It is jointly established by Institute of Telecommunications, Ministry of Industry and Information Technology, Shanghai Economic and Information Technology Commission and Huangpu District Government. Scope: Information and communication technology research. Information and communication technology research. Information and communication technology research. Carry out testing, verification and technical evaluation of communication equipment, study and formulate relevant technical standards, provide relevant information consulting services, and provide mobile phone testing and certification services. At present, it is in an open state, and no risks have been found, which shows that Shanghai East China Telecom Research Institute is safe and reliable.