Is it illegal for community security to have no "security certificate"? Which department is in charge?

According to the law, community security guards have no responsibility as long as they perform the system of personnel and vehicles entering and leaving the gate and patrol according to their duties.

The current community security guards are not called security guards, but order maintainers. Naturally, no security certificate is required.

Public security is generally managed by the police stations in this area. But the concept of responsibility is vague.