Is the offer signed by the general manager valid?

The quotation signed by the general manager is valid.

Usually, the offer issued by the personnel department needs the signature of the general manager or senior management of the company to take effect. This is because the general manager, as the top manager of the company, has the power to decide and authorize hiring decision. The general manager's signature indicates the recognition and approval of the employment decision, and the offer is legally effective and binding. The offer signed by the general manager is the official employment intention of the company to the candidate, and promises important information such as employment conditions, salary and treatment, work details and so on. After receiving and accepting such employment notice, candidates usually sign a formal employment contract or agreement with the company.