Which housing bank in Shenzhen is in charge, and what is the telephone number of the salesman?

Shenzhen Guo Bang Real Estate Consultant Co., Ltd. was established with the approval of government departments and relevant departments. Now the business scope has covered every corner of Shenzhen, with branches in Luohu, Futian and Nanshan. Luohu International Trade Center, Jazz Building 12 Floor, has a branch office, and Baidu Zhu Zhu can find his contact information. Thank you!