Steel fire door has a variety of different open operation modes, but also has a variety of professional functions, can be effectively closed or isolated. Heat, sound, dust and theft, and can be adapted to a variety of environments for installation and use. Therefore, steel fire doors are convenient to use, striking, attracting more users, in order to obtain a good life experience. And meet the user’s convenient operation and use needs, paving the way or protecting a better life.

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