yes. According to the query "Requirements for Relevant Standards and Specifications of Fire Doors", the S-mark of fire doors is a fire-fighting sign, which is like the "ID card" of doors. Through system scanning, all the information of the manufacturer can be obtained. This sign is one of the qualification certificates that fire doors must have, and it is an inspection sign of fire doors by the State Fire Protection Administration. It must be reported by qualified manufacturers before it can be issued, and it is an important project for the fire department to accept fire-fighting facilities. The steel plate of the fire door must be consistent with the manufacturer, trademark, specification and model of the fire door, and it is not allowed to post it at will, and it is not allowed to wear it. Otherwise, it can be directly judged as unqualified fire products when the fire rescue agency conducts on-site inspection and judgment on the fire door, so the S mark of the fire door should correspond to the steel plate.