According to the current public information, it is not possible to determine whether Huang Jiulin of Beijing Honor Terminal Co., Ltd. is a middle-level leader and whether his rank is level 7.
Because rank and leadership information within a company is usually not disclosed, and the hierarchy can vary from company to company.
You need to know more about the organizational structure and rank system of the company to make a judgment.
If you need to know the specific position and rank information of Huang Jiulin in the company, you can get a more accurate answer by consulting the company's official website or the company's human resources department.