Reliable. Sheng Da Guanghua Education Group is a formal company protected by official website certification law, so it is more reliable. Sheng Da Guanghua Education Group was established in 2004. Its headquarters is located in Zhongguancun, Haidian District, Beijing, and the Shandong Operation Center is located in the central campus of Shandong University. It is a training institution with the qualification of running a school and the qualification certificate of training teachers approved by the competent education department.