Fire curtain doors consist of 13 components, including curtain panels, seat panels, guides, supports, drums, housing, control boxes, door operators, limit switches, lintel, manual rapid release switches, push-button switches, and safety devices. They are typically installed in areas of fire walls where separation is impractical, such as open elevator lobbies, automatic escalators, large commercial halls in department stores, exhibition halls in exhibition buildings, and in some large openings where fire doors and windows cannot be used.

"Da Fusi" brand特级inorganic fabric fire-resistant roller shutters produced by Beijing Da Fusi, with a fire-resistant back exceeding 3 hours, customizable according to site conditions, offering standard and non-standard products to meet fire inspection requirements.