It's for evacuation doors in the hallways, steel doors in schools, fireproof, hatton

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Flash sale price: The promotional price of a product participating in marketing activities may also vary depending on the purchase quantity or selected specifications, and the final price will be based on the order settlement page price.

Flash sale price: The promotional price of a product participating in marketing activities may also vary depending on the purchase quantity or selected specifications, and the final price will be based on the order settlement page price.