In the lock system, it is a lock specially designed for fire doors. The fire lock is made of special materials (such as heat-resistant alloys, non-combustible plastics, etc.) and can maintain structural stability in fire.
In the lock system, it is a lock specially designed for fire doors. The fire lock is made of special materials (such as heat-resistant alloys, non-combustible plastics, etc.) and can maintain structural stability in fire.
In the lock system, it is a lock specially designed for fire doors. The fire lock is made of special materials (such as heat-resistant alloys, non-combustible plastics, etc.) and can maintain structural stability in fire.